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Sample records for acm trans math

  1. ACME-III and ACME-IV Final Campaign Reports

    SciTech Connect

    Biraud, S. C.

    2016-01-01

    The goals of the Atmospheric Radiation Measurement (ARM) Climate Research Facility’s third and fourth Airborne Carbon Measurements (ACME) field campaigns, ACME-III and ACME-IV, are: 1) to measure and model the exchange of CO2, water vapor, and other greenhouse gases by the natural, agricultural, and industrial ecosystems of the Southern Great Plains (SGP) region; 2) to develop quantitative approaches to relate these local fluxes to the concentration of greenhouse gases measured at the Central Facility tower and in the atmospheric column above the ARM SGP Central Facility, 3) to develop and test bottom-up measurement and modeling approaches to estimate regional scale carbon balances, and 4) to develop and test inverse modeling approaches to estimate regional scale carbon balance and anthropogenic sources over continental regions. Regular soundings of the atmosphere from near the surface into the mid-troposphere are essential for this research.

  2. Asbestos-Containing Materials (ACM) and Demolition

    EPA Pesticide Factsheets

    There are specific federal regulatory requirements that require the identification of asbestos-containing materials (ACM) in many of the residential buildings that are being demolished or renovated by a municipality.

  3. Quark ACM with topologically generated gluon mass

    NASA Astrophysics Data System (ADS)

    Choudhury, Ishita Dutta; Lahiri, Amitabha

    2016-03-01

    We investigate the effect of a small, gauge-invariant mass of the gluon on the anomalous chromomagnetic moment (ACM) of quarks by perturbative calculations at one-loop level. The mass of the gluon is taken to have been generated via a topological mass generation mechanism, in which the gluon acquires a mass through its interaction with an antisymmetric tensor field Bμν. For a small gluon mass ( < 10 MeV), we calculate the ACM at momentum transfer q2 = -M Z2. We compare those with the ACM calculated for the gluon mass arising from a Proca mass term. We find that the ACM of up, down, strange and charm quarks vary significantly with the gluon mass, while the ACM of top and bottom quarks show negligible gluon mass dependence. The mechanism of gluon mass generation is most important for the strange quarks ACM, but not so much for the other quarks. We also show the results at q2 = -m t2. We find that the dependence on gluon mass at q2 = -m t2 is much less than at q2 = -M Z2 for all quarks.

  4. Additive Construction with Mobile Emplacement (ACME)

    NASA Technical Reports Server (NTRS)

    Vickers, John

    2015-01-01

    The Additive Construction with Mobile Emplacement (ACME) project is developing technology to build structures on planetary surfaces using in-situ resources. The project focuses on the construction of both 2D (landing pads, roads, and structure foundations) and 3D (habitats, garages, radiation shelters, and other structures) infrastructure needs for planetary surface missions. The ACME project seeks to raise the Technology Readiness Level (TRL) of two components needed for planetary surface habitation and exploration: 3D additive construction (e.g., contour crafting), and excavation and handling technologies (to effectively and continuously produce in-situ feedstock). Additionally, the ACME project supports the research and development of new materials for planetary surface construction, with the goal of reducing the amount of material to be launched from Earth.

  5. Math Magician.

    ERIC Educational Resources Information Center

    Bailey, Anne Lowrey

    1984-01-01

    Charles Pine, CASE's Professor of the Year, is a professor who gets students to know and love math and physics and who has emerged as a leading teacher of math teachers. It started when Pine found that his students couldn't do the math involved in his physics classes. (MLW)

  6. Porcine bladder acellular matrix (ACM): protein expression, mechanical properties.

    PubMed

    Farhat, Walid A; Chen, Jun; Haig, Jennifer; Antoon, Roula; Litman, Jessica; Sherman, Christopher; Derwin, Kathleen; Yeger, Herman

    2008-06-01

    Experimentally, porcine bladder acellular matrix (ACM) that mimics extracellular matrix has excellent potential as a bladder substitute. Herein we investigated the spatial localization and expression of different key cellular and extracellular proteins in the ACM; furthermore, we evaluated the inherent mechanical properties of the resultant ACM prior to implantation. Using a proprietary decellularization method, the DNA contents in both ACM and normal bladder were measured; in addition we used immunohistochemistry and western blots to quantify and localize the different cellular and extracellular components, and finally the mechanical testing was performed using a uniaxial mechanical testing machine. The mean DNA content in the ACM was significantly lower in the ACM compared to the bladder. Furthermore, the immunohistochemical and western blot analyses showed that collagen I and IV were preserved in the ACM, but possibly denatured collagen III in the ACM. Furthermore, elastin, laminin and fibronectin were mildly reduced in the ACM. Although the ACM did not exhibit nucleated cells, residual cellular components (actin, myosin, vimentin and others) were still present. There was, on the other hand, no significant difference in the mean stiffness between the ACM and the bladder. Although our decellularization method is effective in removing nuclear material from the bladder while maintaining its inherent mechanical properties, further work is mandatory to determine whether these residual DNA and cellular remnants would lead to any immune reaction, or if the mechanical properties of the ACM are preserved upon implantation and cellularization.

  7. ACM TOMS replicated computational results initiative

    DOE PAGES

    Heroux, Michael Allen

    2015-06-03

    In this study, the scientific community relies on the peer review process for assuring the quality of published material, the goal of which is to build a body of work we can trust. Computational journals such as The ACM Transactions on Mathematical Software (TOMS) use this process for rigorously promoting the clarity and completeness of content, and citation of prior work. At the same time, it is unusual to independently confirm computational results.

  8. ACM TOMS replicated computational results initiative

    SciTech Connect

    Heroux, Michael Allen

    2015-06-03

    In this study, the scientific community relies on the peer review process for assuring the quality of published material, the goal of which is to build a body of work we can trust. Computational journals such as The ACM Transactions on Mathematical Software (TOMS) use this process for rigorously promoting the clarity and completeness of content, and citation of prior work. At the same time, it is unusual to independently confirm computational results.

  9. Porosity of porcine bladder acellular matrix: impact of ACM thickness.

    PubMed

    Farhat, Walid; Chen, Jun; Erdeljan, Petar; Shemtov, Oren; Courtman, David; Khoury, Antoine; Yeger, Herman

    2003-12-01

    The objectives of this study are to examine the porosity of bladder acellular matrix (ACM) using deionized (DI) water as the model fluid and dextran as the indicator macromolecule, and to correlate the porosity to the ACM thickness. Porcine urinary bladders from pigs weighing 20-50 kg were sequentially extracted in detergent containing solutions, and to modify the ACM thickness, stretched bladders were acellularized in the same manner. Luminal and abluminal ACM specimens were subjected to fixed static DI water pressure (10 cm); and water passing through the specimens was collected at specific time interval. While for the macromolecule porosity testing, the diffusion rate and direction of 10,000 MW fluoroescein-labeled dextrans across the ACM specimens mounted in Ussing's chambers were measured. Both experiments were repeated on the thin stretched ACM. In both ACM types, the fluid porosity in both directions did not decrease with increased test duration (3 h); in addition, the abluminal surface was more porous to fluid than the luminal surface. On the other hand, when comparing thin to thick ACM, the porosity in either direction was higher in the thick ACM. Macromolecule porosity, as measured by absorbance, was higher for the abluminal thick ACM than the luminal side, but this characteristic was reversed in the thin ACM. Comparing thin to thick ACM, the luminal side in the thin ACM was more porous to dextran than in the thick ACM, but this characteristic was reversed for the abluminal side. The porcine bladder ACM possesses directional porosity and acellularizing stretched urinary bladders may increase structural density and alter fluid and macromolecule porosity.

  10. How to recycle asbestos containing materials (ACM)

    SciTech Connect

    Jantzen, C.M.

    2000-04-11

    The current disposal of asbestos containing materials (ACM) in the private sector consists of sealing asbestos wetted with water in plastic for safe transportation and burial in regulated land fills. This disposal methodology requires large disposal volumes especially for asbestos covered pipe and asbestos/fiberglass adhering to metal framework, e.g. filters. This wrap and bury technology precludes recycle of the asbestos, the pipe and/or the metal frameworks. Safe disposal of ACM at U.S. Department of Energy (DOE) sites, likewise, requires large disposal volumes in landfills for non-radioactive ACM and large disposal volumes in radioactive burial grounds for radioactive and suspect contaminated ACM. The availability of regulated disposal sites is rapidly diminishing causing recycle to be a more attractive option. Asbestos adhering to metal (e.g., pipes) can be recycled by safely removing the asbestos from the metal in a patented hot caustic bath which prevents airborne contamination /inhalation of asbestos fibers. The dissolution residue (caustic and asbestos) can be wet slurry fed to a melter and vitrified into a glass or glass-ceramic. Palex glasses, which are commercially manufactured, are shown to be preferred over conventional borosilicate glasses. The Palex glasses are alkali magnesium silicate glasses derived by substituting MgO for B{sub 2}O{sub 3} in borosilicate type glasses. Palex glasses are very tolerant of the high MgO and high CaO content of the fillers used in forming asbestos coverings for pipes and found in boiler lashing, e.g., hydromagnesite (3MgCO{sub 3} Mg(OH){sub 2} 3H{sub 2}O) and plaster of paris, gypsum (CaSO{sub 4}). The high temperate of the vitrification process destroys the asbestos fibers and renders the asbestos non-hazardous, e.g., a glass or glass-ceramic. In this manner the glass or glass-ceramic produced can be recycled, e.g., glassphalt or glasscrete, as can the clean metal pipe or metal framework.

  11. Math's Double Standard. Math Works

    ERIC Educational Resources Information Center

    Achieve, Inc., 2013

    2013-01-01

    Far too many students in the U.S. give up on math early because it does not come easy and they believe only students with innate ability can really be "good" at mathematics, a notion that is all too often reinforced by adults who believe the same thing. There is a serious gap between how Americans value math generally and how they value math for…

  12. Math Wars.

    ERIC Educational Resources Information Center

    Abreu, Julio

    2000-01-01

    Four decades ago following Russia's Sputnik satellite launching, the nation embraced "new" math as part of its commitment not to fall behind its global neighbors. Issues addressed in "new-new" math include equal access to challenging learning, problem solving, reasoning and proof, communications, multiple ways to solve…

  13. Math Games

    ERIC Educational Resources Information Center

    Lorenzi, Natalie

    2012-01-01

    Math games bring out kids' natural love of numbers. Yet in the waning days of school, students can't wait for that final bell to ring. Each summer, most students lose about two months of mathematical computation skills. So how do teachers keep their students focused on math up till the end? Before sending them off for the summer, get them hooked…

  14. Parrot Math.

    ERIC Educational Resources Information Center

    O'Brien, Thomas C.

    1999-01-01

    Parrot math (memorization) seeks to control children through external rewards and punishments, rather than harness their intelligence and curiosity. Recent standardized test results document parrot math's failure. Activities-based approaches, supported by a constructivist philosophy (involving classifying, inferring, generalizing, and…

  15. Acme Foundry, Inc. - Clean Water Act Public Notice

    EPA Pesticide Factsheets

    The EPA is providing notice of a proposed Administrative Penalty Assessment against Acme Foundry, Inc., for alleged violations at its facility located at 1502 South Spruce Street, Coffeyville, Kansas 67337

  16. Math Problem

    ERIC Educational Resources Information Center

    Oguntoyinbo, Lekan

    2012-01-01

    Many experts give the nation's schools a poor grade for their approach to teaching mathematics and for their preparation of mathematics teachers. While many policymakers make much of data that suggest children in the United States lag behind many other advanced countries in math, many experts call for a change in mathematics education,…

  17. Penguin Math

    ERIC Educational Resources Information Center

    Green, Daniel; Kearney, Thomas

    2015-01-01

    Emperor penguins, the largest of all the penguin species, attain heights of nearly four feet and weigh up to 99 pounds. Many students are not motivated to learn mathematics when textbook examples contain largely nonexistent contexts or when the math is not used to solve significant problems found in real life. This article's project explores how…

  18. Talking Maths

    ERIC Educational Resources Information Center

    Murray, Jenny

    2006-01-01

    Discussion in maths lessons has always been something encouraged by ATM but can be difficult to initiate for non-specialist and inexperienced teachers who may feel they need material in books to get them going. In this article, the author describes resources aimed at encouraging discussion among primary mathematicians. These resources include: (1)…

  19. Counseling the Math Anxious

    ERIC Educational Resources Information Center

    Tobias, Sheila; Donady, Bonnie

    1977-01-01

    Describes the rationale and mode of operations for a Math Clinic at Wellesley University and Wesleyan College where counselors and math specialists work together to combat "math anxiety," particularly in female students. (HMV)

  20. Lift the Math Curse

    ERIC Educational Resources Information Center

    Albrecht, Cathlene

    2006-01-01

    "When am I ever going to use this?" This question is heard or thought in every middle-level math class across the land. Teachers struggle to apply math lessons to everyday life and make math meaningful and useful for their students. This author, too, struggled with this problem, until she read the book "Math Curse" by Jon Scieszka (Viking Books,…

  1. Math Sense: Comprehensive Review.

    ERIC Educational Resources Information Center

    Hoyt, Cathy Fillmore

    This book features a comprehensive review of the Math Sense series and is designed to help students gain the range of math skills they need to succeed in life, work, and on standardized tests; overcome math anxiety; discover math as interesting and purposeful; and develop good number sense. Topics covered in this book include whole numbers;…

  2. Prevalence and genetic diversity of arginine catabolic mobile element (ACME) in clinical isolates of coagulase-negative staphylococci: identification of ACME type I variants in Staphylococcus epidermidis.

    PubMed

    Onishi, Mayumi; Urushibara, Noriko; Kawaguchiya, Mitsuyo; Ghosh, Souvik; Shinagawa, Masaaki; Watanabe, Naoki; Kobayashi, Nobumichi

    2013-12-01

    Arginine catabolic mobile element (ACME), a genomic island consisting of the arc and/or opp3 gene clusters found in staphylococcal species, is related to increased bacterial adaptability to hosts. Staphylococcus epidermidis is considered a major ACME reservoir; however, prevalence and genetic diversity of ACME in coagulase-negative staphylococci (CNS) have not yet been well characterized for clinical isolates in Japan. A total of 271 clinical isolates of CNS in a Japanese hospital were investigated for the presence and genotype of ACME and SCCmec. The prevalence of ACME-arcA was significantly higher (p<0.001) in S. epidermidis (45.8%) than in other CNS species (3.7%). ACME in S. epidermidis isolates (n=87) were differentiated into type I (n=33), variant forms of type I (ΔI, n=26) newly identified in this study, type II (n=6), and type ΔII (n=19). ACME-type ΔI, which were further classified into three subtypes, lacked some genetic components between the arc and opp3 clusters in archetypal type I, whereas the arc and opp3 clusters were intact. The arc cluster exhibited high sequence identity (95.8-100%) to that of type I ACME; in contrast, the opp3 cluster was highly diverse, and showed relatively lower identities (94.8-98.7%) to the identical regions in type I ACME. Twenty-one isolates of ΔI ACME-carrying S. epidermidis possessed SCCmec IVa and belonged to ST5 (clonal complex 2). Phylogenetic analysis revealed that isolates harboring ACME ΔI in this study clustered with previously reported S. epidermidis strains with other lineges, suggesting that S. epidermidis originally had some genetic variations in the opp3 cluster. In summary, ACME type ΔI, a truncated variant of ACME-I, was first identified in S. epidermidis, and revealed to be prevalent in ST5 MRSE clinical isolates with SCCmec IVa.

  3. Sealing Force Increasing of ACM Gasket through Electron Beam Radiation

    NASA Astrophysics Data System (ADS)

    dos Santos, D. J.; Batalha, G. F.

    2011-01-01

    Rubber is an engineering material largely used as sealing parts, in form of O-rings, solid gaskets and liquid gaskets, materials applied in liquid state with posterior vulcanization and sealing. Stress relaxation is a rubber characteristic which impacts negatively in such industrial applications (rings and solid gaskets). This work has the purpose to investigate the use of electron beam radiation (EB) as a technology able to decrease the stress relaxation in acrylic rubber (ACM), consequently increasing the sealing capability of this material. ACM samples were irradiated with dose of 100 kGy and 250 kGy, its behavior was comparatively investigated using, dynamic mechanical analysis (DMA) and compression stress relaxation (CSR) experiments. The results obtained by DMA shown an increase of Tg and changes in dynamic mechanical behavior.

  4. Advanced Math Equals Career Readiness. Math Works

    ERIC Educational Resources Information Center

    Achieve, Inc., 2013

    2013-01-01

    The equation is simple: No matter their background, students who take challenging math courses in high school get better jobs and earn more money throughout their entire lives. This paper stresses that: (1) Higher-level math opens doors for any and all postsecondary programs and keeps it open for advancement beyond entry-level jobs; and (2)…

  5. Solving America's Math Problem

    ERIC Educational Resources Information Center

    Vigdor, Jacob

    2013-01-01

    Concern about students' math achievement is nothing new, and debates about the mathematical training of the nation's youth date back a century or more. In the early 20th century, American high-school students were starkly divided, with rigorous math courses restricted to a college-bound elite. At midcentury, the "new math" movement sought,…

  6. Using Math Menus

    ERIC Educational Resources Information Center

    Burns, Marilyn

    2016-01-01

    Math education consultant Marilyn Burns finds that teachers ask her the same three questions so often she's named them "The Big Three": What can I do with students who finish their math work more quickly?, How can I free up time to work with kids who need extra help?, and How can I differentiate math learning experiences? Burns, who…

  7. Math Skills Assessment

    ERIC Educational Resources Information Center

    Hartel, R. W.; Adem, M.

    2004-01-01

    A math review exam, written and administered in conjunction with the Quantitative Assessment Program at the Univ. of Wisconsin-Madison, is used at the beginning of the 1st food engineering course to evaluate math skills needed for successful completion of the course. Students who do not score well on the math exam are targeted for individual…

  8. ACME, a GIS tool for Automated Cirque Metric Extraction

    NASA Astrophysics Data System (ADS)

    Spagnolo, Matteo; Pellitero, Ramon; Barr, Iestyn D.; Ely, Jeremy C.; Pellicer, Xavier M.; Rea, Brice R.

    2017-02-01

    Regional scale studies of glacial cirque metrics provide key insights on the (palaeo) environment related to the formation of these erosional landforms. The growing availability of high resolution terrain models means that more glacial cirques can be identified and mapped in the future. However, the extraction of their metrics still largely relies on time consuming manual techniques or the combination of, more or less obsolete, GIS tools. In this paper, a newly coded toolbox is provided for the automated, and comparatively quick, extraction of 16 key glacial cirque metrics; including length, width, circularity, planar and 3D area, elevation, slope, aspect, plan closure and hypsometry. The set of tools, named ACME (Automated Cirque Metric Extraction), is coded in Python, runs in one of the most commonly used GIS packages (ArcGIS) and has a user friendly interface. A polygon layer of mapped cirques is required for all metrics, while a Digital Terrain Model and a point layer of cirque threshold midpoints are needed to run some of the tools. Results from ACME are comparable to those from other techniques and can be obtained rapidly, allowing large cirque datasets to be analysed and potentially important regional trends highlighted.

  9. Female teachers' math anxiety affects girls' math achievement.

    PubMed

    Beilock, Sian L; Gunderson, Elizabeth A; Ramirez, Gerardo; Levine, Susan C

    2010-02-02

    People's fear and anxiety about doing math--over and above actual math ability--can be an impediment to their math achievement. We show that when the math-anxious individuals are female elementary school teachers, their math anxiety carries negative consequences for the math achievement of their female students. Early elementary school teachers in the United States are almost exclusively female (>90%), and we provide evidence that these female teachers' anxieties relate to girls' math achievement via girls' beliefs about who is good at math. First- and second-grade female teachers completed measures of math anxiety. The math achievement of the students in these teachers' classrooms was also assessed. There was no relation between a teacher's math anxiety and her students' math achievement at the beginning of the school year. By the school year's end, however, the more anxious teachers were about math, the more likely girls (but not boys) were to endorse the commonly held stereotype that "boys are good at math, and girls are good at reading" and the lower these girls' math achievement. Indeed, by the end of the school year, girls who endorsed this stereotype had significantly worse math achievement than girls who did not and than boys overall. In early elementary school, where the teachers are almost all female, teachers' math anxiety carries consequences for girls' math achievement by influencing girls' beliefs about who is good at math.

  10. Micro-Stirling Active Cooling Module (MS/ACM) for DoD Electronics Systems

    DTIC Science & Technology

    2012-03-01

    Micro- Stirling Active Cooling Module (MS/ACM) for DoD Electronics Systems Douglas S. Beck Beck Engineering , Inc. 1490 Lumsden Road, Port Orchard...refrigerator. We are developing for DARPA a cm-scale Micro- Stirling Active Cooling Module (MS/ACM) micro- refrigerator to benefit the DoD systems. Under...a DARPA contract, we are designing, building, and demonstrating a breadboard MS/ACM. Keywords: Stirling ; cooler; active cooling module; micro

  11. Developmental Math with a Difference.

    ERIC Educational Resources Information Center

    Zwerling, L. Steven

    1979-01-01

    Describes the Math Learning Center at Palm Beach Junior College which offers 21 courses of study, including all math courses through trigonometry and 11 general education math courses. Examines the implementation process and various program features. (DR)

  12. Parent-child math anxiety and math-gender stereotypes predict adolescents' math education outcomes

    PubMed Central

    Casad, Bettina J.; Hale, Patricia; Wachs, Faye L.

    2015-01-01

    Two studies examined social determinants of adolescents' math anxiety including parents' own math anxiety and children's endorsement of math-gender stereotypes. In Study 1, parent-child dyads were surveyed and the interaction between parent and child math anxiety was examined, with an eye to same- and other-gender dyads. Results indicate that parent's math anxiety interacts with daughters' and sons' anxiety to predict math self-efficacy, GPA, behavioral intentions, math attitudes, and math devaluing. Parents with lower math anxiety showed a positive relationship to children's math outcomes when children also had lower anxiety. The strongest relationships were found with same-gender dyads, particularly Mother-Daughter dyads. Study 2 showed that endorsement of math-gender stereotypes predicts math anxiety (and not vice versa) for performance beliefs and outcomes (self-efficacy and GPA). Further, math anxiety fully mediated the relationship between gender stereotypes and math self-efficacy for girls and boys, and for boys with GPA. These findings address gaps in the literature on the role of parents' math anxiety in the effects of children's math anxiety and math anxiety as a mechanism affecting performance. Results have implications for interventions on parents' math anxiety and dispelling gender stereotypes in math classrooms. PMID:26579000

  13. Parent-child math anxiety and math-gender stereotypes predict adolescents' math education outcomes.

    PubMed

    Casad, Bettina J; Hale, Patricia; Wachs, Faye L

    2015-01-01

    Two studies examined social determinants of adolescents' math anxiety including parents' own math anxiety and children's endorsement of math-gender stereotypes. In Study 1, parent-child dyads were surveyed and the interaction between parent and child math anxiety was examined, with an eye to same- and other-gender dyads. Results indicate that parent's math anxiety interacts with daughters' and sons' anxiety to predict math self-efficacy, GPA, behavioral intentions, math attitudes, and math devaluing. Parents with lower math anxiety showed a positive relationship to children's math outcomes when children also had lower anxiety. The strongest relationships were found with same-gender dyads, particularly Mother-Daughter dyads. Study 2 showed that endorsement of math-gender stereotypes predicts math anxiety (and not vice versa) for performance beliefs and outcomes (self-efficacy and GPA). Further, math anxiety fully mediated the relationship between gender stereotypes and math self-efficacy for girls and boys, and for boys with GPA. These findings address gaps in the literature on the role of parents' math anxiety in the effects of children's math anxiety and math anxiety as a mechanism affecting performance. Results have implications for interventions on parents' math anxiety and dispelling gender stereotypes in math classrooms.

  14. Towards an Autonomic Cluster Management System (ACMS) with Reflex Autonomicity

    NASA Technical Reports Server (NTRS)

    Truszkowski, Walt; Hinchey, Mike; Sterritt, Roy

    2005-01-01

    Cluster computing, whereby a large number of simple processors or nodes are combined together to apparently function as a single powerful computer, has emerged as a research area in its own right. The approach offers a relatively inexpensive means of providing a fault-tolerant environment and achieving significant computational capabilities for high-performance computing applications. However, the task of manually managing and configuring a cluster quickly becomes daunting as the cluster grows in size. Autonomic computing, with its vision to provide self-management, can potentially solve many of the problems inherent in cluster management. We describe the development of a prototype Autonomic Cluster Management System (ACMS) that exploits autonomic properties in automating cluster management and its evolution to include reflex reactions via pulse monitoring.

  15. Air Traffic Complexity Measurement Environment (ACME): Software User's Guide

    NASA Technical Reports Server (NTRS)

    1996-01-01

    A user's guide for the Air Traffic Complexity Measurement Environment (ACME) software is presented. The ACME consists of two major components, a complexity analysis tool and user interface. The Complexity Analysis Tool (CAT) analyzes complexity off-line, producing data files which may be examined interactively via the Complexity Data Analysis Tool (CDAT). The Complexity Analysis Tool is composed of three independently executing processes that communicate via PVM (Parallel Virtual Machine) and Unix sockets. The Runtime Data Management and Control process (RUNDMC) extracts flight plan and track information from a SAR input file, and sends the information to GARP (Generate Aircraft Routes Process) and CAT (Complexity Analysis Task). GARP in turn generates aircraft trajectories, which are utilized by CAT to calculate sector complexity. CAT writes flight plan, track and complexity data to an output file, which can be examined interactively. The Complexity Data Analysis Tool (CDAT) provides an interactive graphic environment for examining the complexity data produced by the Complexity Analysis Tool (CAT). CDAT can also play back track data extracted from System Analysis Recording (SAR) tapes. The CDAT user interface consists of a primary window, a controls window, and miscellaneous pop-ups. Aircraft track and position data is displayed in the main viewing area of the primary window. The controls window contains miscellaneous control and display items. Complexity data is displayed in pop-up windows. CDAT plays back sector complexity and aircraft track and position data as a function of time. Controls are provided to start and stop playback, adjust the playback rate, and reposition the display to a specified time.

  16. Contribution of the collagen adhesin Acm to pathogenesis of Enterococcus faecium in experimental endocarditis.

    PubMed

    Nallapareddy, Sreedhar R; Singh, Kavindra V; Murray, Barbara E

    2008-09-01

    Enterococcus faecium is a multidrug-resistant opportunist causing difficult-to-treat nosocomial infections, including endocarditis, but there are no reports experimentally demonstrating E. faecium virulence determinants. Our previous studies showed that some clinical E. faecium isolates produce a cell wall-anchored collagen adhesin, Acm, and that an isogenic acm deletion mutant of the endocarditis-derived strain TX0082 lost collagen adherence. In this study, we show with a rat endocarditis model that TX0082 Deltaacm::cat is highly attenuated versus wild-type TX0082, both in established (72 h) vegetations (P < 0.0001) and for valve colonization 1 and 3 hours after infection (P Acm the first factor shown to be important for E. faecium pathogenesis. In contrast, no mortality differences were observed in a mouse peritonitis model. While 5 of 17 endocarditis isolates were Acm nonproducers and failed to adhere to collagen in vitro, all had an intact, highly conserved acm locus. Highly reduced acm mRNA levels (>or=50-fold reduction relative to an Acm producer) were found in three of these five nonadherent isolates, including the sequenced strain TX0016, by quantitative reverse transcription-PCR, indicating that acm transcription is downregulated in vitro in these isolates. However, examination of TX0016 cells obtained directly from infected rat vegetations by flow cytometry showed that Acm was present on 40% of cells grown during infection. Finally, we demonstrated a significant reduction in E. faecium collagen adherence by affinity-purified anti-Acm antibodies from E. faecium endocarditis patient sera, suggesting that Acm may be a potential immunotarget for strategies to control this emerging pathogen.

  17. The Massachusetts Math Wars

    ERIC Educational Resources Information Center

    Stotsky, Sandra

    2007-01-01

    This article recounts the battle in the "math wars" that took place in Massachusetts, United States in 1999-2000 over the scope, content and teaching of the state's K-12 mathematics curriculum. Harsh controversies arose between the partisans of a "reform-math" movement stressing an undefined "conceptual understanding"…

  18. Making Math Work

    ERIC Educational Resources Information Center

    Stone, James R., III

    2007-01-01

    This article presents a study, Building Academic Skills in Context: Testing the Value of Enhanced Math Learning in Career and Technical Education, which focused on areas where mathematics concepts logically occurred in the technical and career field being studied and emphasized the math skills students must learn to understand those concepts in…

  19. The Influence of Experiencing Success in Math on Math Anxiety, Perceived Math Competence, and Math Performance

    ERIC Educational Resources Information Center

    Jansen, Brenda R. J.; Louwerse, Jolien; Straatemeier, Marthe; Van der Ven, Sanne H. G.; Klinkenberg, Sharon; Van der Maas, Han L. J.

    2013-01-01

    It was investigated whether children would experience less math anxiety and feel more competent when they, independent of ability level, experienced high success rates in math. Comparable success rates were achieved by adapting problem difficulty to individuals' ability levels with a computer-adaptive program. A total of 207 children (grades 3-6)…

  20. Technology = Math Success

    ERIC Educational Resources Information Center

    Tuttle, Harry Grover

    2008-01-01

    Technology can support the study of math in a variety of ways. Through class Web sites, blogs or wikis, teachers can communicate the math standards, the goals needed to achieve the standards, homework assignments, projects, tests, and helpful Web sites for parents and students. The online site becomes an extension of the class. There are plenty of…

  1. Reading and Math.

    ERIC Educational Resources Information Center

    Baldwin, Anna; And Others

    This publication contains materials used in the three phases of the reading and mathematics components of work-specific classes. Each section begins with an overview of developments in that phase. Section 1 focuses on Phase 1 during which math and reading were taught as separate components. It contains a math placement appraisal, worksheets and…

  2. Motivation and Math Anxiety for Ability Grouped College Math Students

    ERIC Educational Resources Information Center

    Helming, Luralyn

    2013-01-01

    The author studied how math anxiety, motivation, and ability group interact to affect performance in college math courses. This clarified the effects of math anxiety and ability grouping on performance. It clarified the interrelationships between math anxiety, motivation, and ability grouping by considering them in a single analysis. It introduces…

  3. Flight Software Math Library

    NASA Technical Reports Server (NTRS)

    McComas, David

    2013-01-01

    The flight software (FSW) math library is a collection of reusable math components that provides typical math utilities required by spacecraft flight software. These utilities are intended to increase flight software quality reusability and maintainability by providing a set of consistent, well-documented, and tested math utilities. This library only has dependencies on ANSI C, so it is easily ported. Prior to this library, each mission typically created its own math utilities using ideas/code from previous missions. Part of the reason for this is that math libraries can be written with different strategies in areas like error handling, parameters orders, naming conventions, etc. Changing the utilities for each mission introduces risks and costs. The obvious risks and costs are that the utilities must be coded and revalidated. The hidden risks and costs arise in miscommunication between engineers. These utilities must be understood by both the flight software engineers and other subsystem engineers (primarily guidance navigation and control). The FSW math library is part of a larger goal to produce a library of reusable Guidance Navigation and Control (GN&C) FSW components. A GN&C FSW library cannot be created unless a standardized math basis is created. This library solves the standardization problem by defining a common feature set and establishing policies for the library s design. This allows the libraries to be maintained with the same strategy used in its initial development, which supports a library of reusable GN&C FSW components. The FSW math library is written for an embedded software environment in C. This places restrictions on the language features that can be used by the library. Another advantage of the FSW math library is that it can be used in the FSW as well as other environments like the GN&C analyst s simulators. This helps communication between the teams because they can use the same utilities with the same feature set and syntax.

  4. Validation of the Adolescent Concerns Measure (ACM): evidence from exploratory and confirmatory factor analysis.

    PubMed

    Ang, Rebecca P; Chong, Wan Har; Huan, Vivien S; Yeo, Lay See

    2007-01-01

    This article reports the development and initial validation of scores obtained from the Adolescent Concerns Measure (ACM), a scale which assesses concerns of Asian adolescent students. In Study 1, findings from exploratory factor analysis using 619 adolescents suggested a 24-item scale with four correlated factors--Family Concerns (9 items), Peer Concerns (5 items), Personal Concerns (6 items), and School Concerns (4 items). Initial estimates of convergent validity for ACM scores were also reported. The four-factor structure of ACM scores derived from Study 1 was confirmed via confirmatory factor analysis in Study 2 using a two-fold cross-validation procedure with a separate sample of 811 adolescents. Support was found for both the multidimensional and hierarchical models of adolescent concerns using the ACM. Internal consistency and test-retest reliability estimates were adequate for research purposes. ACM scores show promise as a reliable and potentially valid measure of Asian adolescents' concerns.

  5. The Effects of Math Anxiety

    ERIC Educational Resources Information Center

    Andrews, Amanda; Brown, Jennifer

    2015-01-01

    Math anxiety is a reoccurring problem for many students, and the effects of this anxiety on college students are increasing. The purpose of this study was to examine the association between pre-enrollment math anxiety, standardized test scores, math placement scores, and academic success during freshman math coursework (i.e., pre-algebra, college…

  6. Math Anxiety: What Is It?

    ERIC Educational Resources Information Center

    Betz, Nancy E.

    While much progress has been made in treating math anxiety, little is yet known about its causes, correlates or effects. The present study examined factors related to the prevalence and intensity of math anxiety in college students and the extent to which math anxiety is predictive of math course grades. The 655 subjects were obtained from two…

  7. On the characteristics-based ACM for incompressible flows

    NASA Astrophysics Data System (ADS)

    Su, Xiaohui; Zhao, Yong; Huang, Xiaoyang

    2007-11-01

    In this paper, the revised characteristics-based (CB) method for incompressible flows recently derived by Neofytou [P. Neofytou, Revision of the characteristic-based scheme for incompressible flows, J. Comput. Phys. 222 (2007) 475-484] has been further investigated. We have derived all the formulas for pressure and velocities from this revised CB method, which is based on the artificial compressibility method (ACM) [A.J. Chorin, A numerical solution for solving incompressible viscous flow problems, J. Comput. Phys. 2 (1967) 12]. Then we analyze the formulations of the original CB method [D. Drikakis, P.A. Govatsos, D.E. Papatonis, A characteristic based method for incompressible flows, Int. J. Numer. Meth. Fluids 19 (1994) 667-685; E. Shapiro, D. Drikakis, Non-conservative and conservative formulations of characteristics numerical reconstructions for incompressible flows, Int. J. Numer. Meth. Eng. 66 (2006) 1466-1482; D. Drikakis, P.K. Smolarkiewicz, On spurious vortical structures, J. Comput. Phys. 172 (2001) 309-325; F. Mallinger, D. Drikakis, Instability in three-dimensional, unsteady stenotic flows, Int. J. Heat Fluid Flow 23 (2002) 657-663; E. Shapiro, D. Drikakis, Artificial compressibility, characteristics-based schemes for variable density, incompressible, multi-species flows. Parts I. Derivation of different formulations and constant density limit, J. Comput. Phys. 210 (2005) 584-607; Y. Zhao, B. Zhang, A high-order characteristics upwind FV method for incompressible flow and heat transfer simulation on unstructured grids, Comput. Meth. Appl. Mech. Eng. 190 (5-7) (2000) 733-756] to investigate their consistency with the governing flow equations after convergence has been achieved. Furthermore we have implemented both formulations in an unstructured-grid finite volume solver [Y. Zhao, B. Zhang, A high-order characteristics upwind FV method for incompressible flow and heat transfer simulation on unstructured grids, Comput. Meth. Appl. Mech. Eng. 190 (5

  8. Principals in Partnership with Math Coaches

    ERIC Educational Resources Information Center

    Grant, Catherine Miles; Davenport, Linda Ruiz

    2009-01-01

    One of the most promising developments in math education is the fact that many districts are hiring math coaches--also called math resource teachers, math facilitators, math lead teachers, or math specialists--to assist elementary-level teachers with math instruction. What must not be lost, however, is that principals play an essential role in…

  9. ARM Airborne Carbon Measurements VI (ACME VI) Science Plan

    SciTech Connect

    Biraud, S

    2015-12-01

    From October 1 through September 30, 2016, the Atmospheric Radiation Measurement (ARM) Aerial Facility will deploy the Cessna 206 aircraft over the Southern Great Plains (SGP) site, collecting observations of trace-gas mixing ratios over the ARM’s SGP facility. The aircraft payload includes two Atmospheric Observing Systems, Inc., analyzers for continuous measurements of CO2 and a 12-flask sampler for analysis of carbon cycle gases (CO2, CO, CH4, N2O, 13CO2, 14CO2, carbonyl sulfide, and trace hydrocarbon species, including ethane). The aircraft payload also includes instrumentation for solar/infrared radiation measurements. This research is supported by the U.S. Department of Energy’s ARM Climate Research Facility and Terrestrial Ecosystem Science Program and builds upon previous ARM Airborne Carbon Measurements (ARM-ACME) missions. The goal of these measurements is to improve understanding of 1) the carbon exchange at the SGP site, 2) how CO2 and associated water and energy fluxes influence radiative forcing, convective processes and CO2 concentrations over the SGP site, and 3) how greenhouse gases are transported on continental scales.

  10. In-situ Data Analysis Framework for ACME Land Simulations

    NASA Astrophysics Data System (ADS)

    Wang, D.; Yao, C.; Jia, Y.; Steed, C.; Atchley, S.

    2015-12-01

    The realistic representation of key biogeophysical and biogeochemical functions is the fundamental of process-based ecosystem models. Investigating the behavior of those ecosystem functions within real-time model simulation can be a very challenging due to the complex of both model and software structure of an environmental model, such as the Accelerated Climate Model for Energy (ACME) Land Model (ALM). In this research, author will describe the urgent needs and challenges for in-situ data analysis for ALM simulations, and layouts our methods/strategies to meet these challenges. Specifically, an in-situ data analysis framework is designed to allow users interactively observe the biogeophyical and biogeochemical process during ALM simulation. There are two key components in this framework, automatically instrumented ecosystem simulation, in-situ data communication and large-scale data exploratory toolkit. This effort is developed by leveraging several active projects, including scientific unit testing platform, common communication interface and extreme-scale data exploratory toolkit. Authors believe that, based on advanced computing technologies, such as compiler-based software system analysis, automatic code instrumentation, and in-memory data transport, this software system provides not only much needed capability for real-time observation and in-situ data analytics for environmental model simulation, but also the potentials for in-situ model behavior adjustment via simulation steering.

  11. Roller Coaster Math.

    ERIC Educational Resources Information Center

    Pritchard, Arvilla

    1992-01-01

    Presents number loop pattern activities and games designed to interest elementary students in mathematics and encourage computational skills. The activities work as games and cooperative activities and invite math exploration. (SM)

  12. Inhibition of Enterococcus faecium adherence to collagen by antibodies against high-affinity binding subdomains of Acm.

    PubMed

    Nallapareddy, Sreedhar R; Sillanpää, Jouko; Ganesh, Vannakambadi K; Höök, Magnus; Murray, Barbara E

    2007-06-01

    Strains of Enterococcus faecium express a cell wall-anchored protein, Acm, which mediates adherence to collagen. Here, we (i) identify the minimal and high-affinity binding subsegments of Acm and (ii) show that anti-Acm immunoglobulin Gs (IgGs) purified against these subsegments reduced E. faecium TX2535 strain collagen adherence up to 73 and 50%, respectively, significantly more than the total IgGs against the full-length Acm A domain (28%) (P < 0.0001). Blocking Acm adherence with functional subsegment-specific antibodies raises the possibility of their use as therapeutic or prophylactic agents.

  13. Comparative study of numerical schemes of TVD3, UNO3-ACM and optimized compact scheme

    NASA Technical Reports Server (NTRS)

    Lee, Duck-Joo; Hwang, Chang-Jeon; Ko, Duck-Kon; Kim, Jae-Wook

    1995-01-01

    Three different schemes are employed to solve the benchmark problem. The first one is a conventional TVD-MUSCL (Monotone Upwind Schemes for Conservation Laws) scheme. The second scheme is a UNO3-ACM (Uniformly Non-Oscillatory Artificial Compression Method) scheme. The third scheme is an optimized compact finite difference scheme modified by us: the 4th order Runge Kutta time stepping, the 4th order pentadiagonal compact spatial discretization with the maximum resolution characteristics. The problems of category 1 are solved by using the second (UNO3-ACM) and third (Optimized Compact) schemes. The problems of category 2 are solved by using the first (TVD3) and second (UNO3-ACM) schemes. The problem of category 5 is solved by using the first (TVD3) scheme. It can be concluded from the present calculations that the Optimized Compact scheme and the UN03-ACM show good resolutions for category 1 and category 2 respectively.

  14. Family Math Night: Middle School Math Standards in Action

    ERIC Educational Resources Information Center

    Taylor-Cox, Jennifer; Oberdorf, Christine

    2006-01-01

    Why should schools have a Family Math Night? It helps students learn essential math concepts. It gives parents a chance to serve as models of motivation, persistence and competence. It promotes math success in a supportive setting. With its step-by-step directions and suggestions for both teachers and parents, this book takes the worry out of…

  15. The acellular matrix (ACM) for bladder tissue engineering: A quantitative magnetic resonance imaging study.

    PubMed

    Cheng, Hai-Ling Margaret; Loai, Yasir; Beaumont, Marine; Farhat, Walid A

    2010-08-01

    Bladder acellular matrices (ACMs) derived from natural tissue are gaining increasing attention for their role in tissue engineering and regeneration. Unlike conventional scaffolds based on biodegradable polymers or gels, ACMs possess native biomechanical and many acquired biologic properties. Efforts to optimize ACM-based scaffolds are ongoing and would be greatly assisted by a noninvasive means to characterize scaffold properties and monitor interaction with cells. MRI is well suited to this role, but research with MRI for scaffold characterization has been limited. This study presents initial results from quantitative MRI measurements for bladder ACM characterization and investigates the effects of incorporating hyaluronic acid, a natural biomaterial useful in tissue-engineering and regeneration. Measured MR relaxation times (T(1), T(2)) and diffusion coefficient were consistent with increased water uptake and glycosaminoglycan content observed on biochemistry in hyaluronic acid ACMs. Multicomponent MRI provided greater specificity, with diffusion data showing an acellular environment and T(2) components distinguishing the separate effects of increased glycosaminoglycans and hydration. These results suggest that quantitative MRI may provide useful information on matrix composition and structure, which is valuable in guiding further development using bladder ACMs for organ regeneration and in strategies involving the use of hyaluronic acid.

  16. When math hurts: math anxiety predicts pain network activation in anticipation of doing math.

    PubMed

    Lyons, Ian M; Beilock, Sian L

    2012-01-01

    Math can be difficult, and for those with high levels of mathematics-anxiety (HMAs), math is associated with tension, apprehension, and fear. But what underlies the feelings of dread effected by math anxiety? Are HMAs' feelings about math merely psychological epiphenomena, or is their anxiety grounded in simulation of a concrete, visceral sensation - such as pain - about which they have every right to feel anxious? We show that, when anticipating an upcoming math-task, the higher one's math anxiety, the more one increases activity in regions associated with visceral threat detection, and often the experience of pain itself (bilateral dorso-posterior insula). Interestingly, this relation was not seen during math performance, suggesting that it is not that math itself hurts; rather, the anticipation of math is painful. Our data suggest that pain network activation underlies the intuition that simply anticipating a dreaded event can feel painful. These results may also provide a potential neural mechanism to explain why HMAs tend to avoid math and math-related situations, which in turn can bias HMAs away from taking math classes or even entire math-related career paths.

  17. Group Activities for Math Enthusiasts

    ERIC Educational Resources Information Center

    Holdener, J.; Milnikel, R.

    2016-01-01

    In this article we present three group activities designed for math students: a balloon-twisting workshop, a group proof of the irrationality of p, and a game of Math Bingo. These activities have been particularly successful in building enthusiasm for mathematics and camaraderie among math faculty and students at Kenyon College.

  18. Numbers and Math. Beginnings Workshop.

    ERIC Educational Resources Information Center

    Gross, Fred E.; Elkind, CavidEpstein, Ann S.; Copley, Juanita V.; Haugen, Ginny; Haugen, Kirsten

    2003-01-01

    Presents five articles addressing numbers and math instruction for young children: "Math Talk with Young Children: One Parent's Experience" (Fred E. Gross); "How Children Build Their Understanding of Numbers" (David Elkind); "Early Math: It's More than Numbers" (Ann S. Epstein); "Assessing Mathematical Learning: Observing and Listening to…

  19. Math Sense: Algebra and Geometry.

    ERIC Educational Resources Information Center

    Howett, Jerry

    This book is designed to help students gain the range of math skills they need to succeed in life, work, and on standardized tests; overcome math anxiety; discover math as interesting and purposeful; and develop good number sense. Topics covered in this book include algebra and geometry. Lessons are organized around four strands: (1) skill lessons…

  20. Trans-Friendly Preschool

    ERIC Educational Resources Information Center

    Dykstra, Laurel A.

    2005-01-01

    Transgender kids and kids from trans families attend preschool and kindergarten. For the safety, comfort, and optimum learning of these students, trans-positive early childhood education environments are necessary. Through simple changes to existing curricula and equipment, teachers, parents, and administrators can create a trans-positive setting…

  1. Is Math Anxiety Always Bad for Math Learning? The Role of Math Motivation.

    PubMed

    Wang, Zhe; Lukowski, Sarah L; Hart, Sara A; Lyons, Ian M; Thompson, Lee A; Kovas, Yulia; Mazzocco, Michèle M M; Plomin, Robert; Petrill, Stephen A

    2015-12-01

    The linear relations between math anxiety and math cognition have been frequently studied. However, the relations between anxiety and performance on complex cognitive tasks have been repeatedly demonstrated to follow a curvilinear fashion. In the current studies, we aimed to address the lack of attention given to the possibility of such complex interplay between emotion and cognition in the math-learning literature by exploring the relations among math anxiety, math motivation, and math cognition. In two samples-young adolescent twins and adult college students-results showed inverted-U relations between math anxiety and math performance in participants with high intrinsic math motivation and modest negative associations between math anxiety and math performance in participants with low intrinsic math motivation. However, this pattern was not observed in tasks assessing participants' nonsymbolic and symbolic number-estimation ability. These findings may help advance the understanding of mathematics-learning processes and provide important insights for treatment programs that target improving mathematics-learning experiences and mathematical skills.

  2. Investigating the Relationships among Primary Teachers' Math Profile, Math Teaching Efficacy, and Math Content Pedagogical Knowledge

    ERIC Educational Resources Information Center

    Roettinger, Theresa Marie

    2014-01-01

    Kindergarten, first and second grade teachers play an important role in the development of a student's understanding of mathematics. Consequently, in order to improve student achievement in mathematics, it is important to investigate the relationships that may exist among primary teachers' math profile, math teaching efficacy, and math pedagogy…

  3. The Influence of Math Beliefs on Math Success in Introductory College Math Classes

    ERIC Educational Resources Information Center

    Loustalet, Joan

    2009-01-01

    This study examined the mathematics beliefs of students who attained mastery, as indicated by earning an A, in their introductory math class in fall, 2008. This study addressed the following research questions: do students who attain mastery in introductory college math courses differ in their math beliefs from students who pass introductory math…

  4. Teaching Art + Math

    ERIC Educational Resources Information Center

    McIntosh, Ronald D.

    2008-01-01

    Professional learning communities (PLCs) are designed to increase and improve the time teachers spend working with one another planning curriculum for mathematics, reading, writing, history, English, and other disciplines offered by their school. These meetings help to improve test scores in math and English. Teachers have coupled their subject…

  5. Math and Science.

    ERIC Educational Resources Information Center

    Drum, Jean, Ed.

    1993-01-01

    This theme issue discusses education of gifted students in the areas of math and science. The issue contains several articles, an editorial, a program description, and a profile of an educator. "Our Most Important Investment for the Future: The Education of Our Youth" (Marian C. Diamond) describes educational programs of the Lawrence…

  6. End the Math Wars

    ERIC Educational Resources Information Center

    Kuhn, Matt; Dempsey, Kathleen

    2011-01-01

    In 1999, Richard Lee Colvin published an article in "The School Administrator" titled "Math Wars: Tradition vs. Real-World Applications" that described the pendulum swing of mathematics education reform. On one side are those who advocate for computational fluency, with a step-by-step emphasis on numbers and skills and the…

  7. Bowland Maths--Update

    ERIC Educational Resources Information Center

    Thompson, Quentin

    2011-01-01

    The March issue of "Mathematics Teaching" included an article by Alice Onion about Bowland Maths, focussing on the nature and use of the Professional Development modules that the Bowland Trust has developed--there are now seven such CPD modules on the Bowland website. The article also mentioned that the Bowland Trust had recently…

  8. Talking about Math

    ERIC Educational Resources Information Center

    Hintz, Allison; Kazemi, Elham

    2014-01-01

    By simply asking students how they got the answer to a problem, math teachers can open the door to stimulating discussions in class. But how can they make sure those discussions promote mathematical understanding? Allison Hintz and Elham Kazemi explain that teachers need to know what the goal is for a discussion and plan accordingly. The authors…

  9. Bridging the Math Gap

    ERIC Educational Resources Information Center

    Switzer, J. Matt

    2010-01-01

    Too often, the experiences that middle school students have in math do not connect to what they experience in elementary school. Although middle school teachers often have a sense of the content that students have learned in elementary school, the school structure and other factors can inhibit communication between elementary school and middle…

  10. Learning to Read Math

    ERIC Educational Resources Information Center

    Wagner, Jennifer

    1978-01-01

    In the first part (AA 527 718) of this two part article math expression was discussed as well as student difficulty with translating written symbols into easily verbalized sentences. In this second part comprehension problems are examined and activities are offered to help students overcome these reading difficulties. (Editor/RK)

  11. "Doing Math" in Austin

    ERIC Educational Resources Information Center

    Raymond, Allen

    2004-01-01

    Since 1990, the January issue of "Teaching Pre K-8" has highlighted a school visit by the president of the National Council of Teachers of Mathematics. This article discusses Cathy Seeley's visit to a 6th grade classroom at the J. E. Pearce Middle School in Austin, Texas, where she participated in a math activity from the Connected…

  12. Cinco de Mayo Math

    ERIC Educational Resources Information Center

    Maida, Paula J.

    2006-01-01

    Integrating mathematics across the curriculum offers students the opportunity to link ideas in a natural, impactive way. In this article, the author shares some interactive math activities that she used in a fourth-grade class on "Cinco de Mayo," a holiday honoring Mexican independence. These fun activities not only allowed connections to be made…

  13. The Oldest Math Textbook.

    ERIC Educational Resources Information Center

    Blum, Christopher O.

    2002-01-01

    Asserts that when college mathematics is taught as one of the liberal arts, Euclid's Elements of Geometry, which is one of the oldest math textbooks, may still be the best, because it helps students understand what is "lovely about mathematics". Suggests that "Elements of Geometry" promotes the mental exercise that comes from…

  14. Mardi Gras Math

    ERIC Educational Resources Information Center

    Eubanks-Turner, Christina; Hajj, Najat

    2015-01-01

    In this article, Christina Eubanks-Turner and Najat Hajj describe a planning process that they used to create a fun-filled eighth-grade math activity that focused on parade planning. The activity was designed to enhance and supplement the eighth-grade algebra curriculum on linear equations and functions, help students use mathematical habits of…

  15. Understanding Math - Teachers Guide.

    ERIC Educational Resources Information Center

    Wyks, Hollis W.; Austin, Robert J.

    The teacher's guide for the remedial text-workbook "Understanding Math" discusses instruction of the deaf student. An answer key for workbooks 1 and 2, a section with masters for transparencies to be used for games and activities and for teaching fractions, and two patterns for making geometric solids are included in the guide. For workbooks 1 and…

  16. The Math Wars

    ERIC Educational Resources Information Center

    Schoenfeld, Alan H.

    2004-01-01

    During the 1990s, the teaching of mathematics became the subject of heated controversies known as the math wars. The immediate origins of the conflicts can be traced to the "reform" stimulated by the National Council of Teachers of Mathematics' "Curriculum and Evaluation Standards for School Mathematics." Traditionalists fear that reform-oriented,…

  17. All Students Need Advanced Mathematics. Math Works

    ERIC Educational Resources Information Center

    Achieve, Inc., 2013

    2013-01-01

    This fact sheet explains that to thrive in today's world, all students will need to graduate with very strong math skills. That can only mean one thing: advanced math courses are now essential math courses. Highlights of this paper include: (1) Advanced math equals college success; (2) Advanced math equals career opportunity; and (3) Advanced math…

  18. Contact dynamics math model

    NASA Technical Reports Server (NTRS)

    Glaese, John R.; Tobbe, Patrick A.

    1986-01-01

    The Space Station Mechanism Test Bed consists of a hydraulically driven, computer controlled six degree of freedom (DOF) motion system with which docking, berthing, and other mechanisms can be evaluated. Measured contact forces and moments are provided to the simulation host computer to enable representation of orbital contact dynamics. This report describes the development of a generalized math model which represents the relative motion between two rigid orbiting vehicles. The model allows motion in six DOF for each body, with no vehicle size limitation. The rotational and translational equations of motion are derived. The method used to transform the forces and moments from the sensor location to the vehicles' centers of mass is also explained. Two math models of docking mechanisms, a simple translational spring and the Remote Manipulator System end effector, are presented along with simulation results. The translational spring model is used in an attempt to verify the simulation with compensated hardware in the loop results.

  19. The role of self-math overlap in understanding math anxiety and the relation between math anxiety and performance

    PubMed Central

    Necka, Elizabeth A.; Sokolowski, H. Moriah; Lyons, Ian M.

    2015-01-01

    Recent work has demonstrated that math anxiety is more than just the product of poor math skills. Psychosocial factors may play a key role in understanding what it means to be math anxious, and hence may aid in attempts to sever the link between math anxiety and poor math performance. One such factor may be the extent to which individuals integrate math into their sense of self. We adapted a well-established measure of this degree of integration (i.e., self-other overlap) to assess individuals’ self-math overlap. This non-verbal single-item measure showed that identifying oneself with math (having higher self-math overlap) was strongly associated with lower math anxiety (r = -0.610). We also expected that having higher self-math overlap would leave one especially susceptible to the threat of poor math performance to the self. We identified two competing hypotheses regarding how this plays out in terms of math anxiety. Those higher in self-math overlap might be more likely to worry about poor math performance, exacerbating the negative relation between math anxiety and math ability. Alternatively, those higher in self-math overlap might exhibit self-serving biases regarding their math ability, which would instead predict a decoupling of the relation between their perceived and actual math ability, and in turn the relation between their math ability and math anxiety. Results clearly favored the latter hypothesis: those higher in self-math overlap exhibited almost no relation between math anxiety and math ability, whereas those lower in self-math overlap showed a strong negative relation between math anxiety and math ability. This was partially explained by greater self-serving biases among those higher in self-math overlap. In sum, these results reveal that the degree to which one integrates math into one’s self – self-math overlap – may provide insight into how the pernicious negative relation between math anxiety and math ability may be ameliorated. PMID

  20. CNTF-ACM promotes mitochondrial respiration and oxidative stress in cortical neurons through upregulating L-type calcium channel activity.

    PubMed

    Sun, Meiqun; Liu, Hongli; Xu, Huanbai; Wang, Hongtao; Wang, Xiaojing

    2016-09-01

    A specialized culture medium termed ciliary neurotrophic factor-treated astrocyte-conditioned medium (CNTF-ACM) allows investigators to assess the peripheral effects of CNTF-induced activated astrocytes upon cultured neurons. CNTF-ACM has been shown to upregulate neuronal L-type calcium channel current activity, which has been previously linked to changes in mitochondrial respiration and oxidative stress. Therefore, the aim of this study was to evaluate CNTF-ACM's effects upon mitochondrial respiration and oxidative stress in rat cortical neurons. Cortical neurons, CNTF-ACM, and untreated control astrocyte-conditioned medium (UC-ACM) were prepared from neonatal Sprague-Dawley rat cortical tissue. Neurons were cultured in either CNTF-ACM or UC-ACM for a 48-h period. Changes in the following parameters before and after treatment with the L-type calcium channel blocker isradipine were assessed: (i) intracellular calcium levels, (ii) mitochondrial membrane potential (ΔΨm), (iii) oxygen consumption rate (OCR) and adenosine triphosphate (ATP) formation, (iv) intracellular nitric oxide (NO) levels, (v) mitochondrial reactive oxygen species (ROS) production, and (vi) susceptibility to the mitochondrial complex I toxin rotenone. CNTF-ACM neurons displayed the following significant changes relative to UC-ACM neurons: (i) increased intracellular calcium levels (p < 0.05), (ii) elevation in ΔΨm (p < 0.05), (iii) increased OCR and ATP formation (p < 0.05), (iv) increased intracellular NO levels (p < 0.05), (v) increased mitochondrial ROS production (p < 0.05), and (vi) increased susceptibility to rotenone (p < 0.05). Treatment with isradipine was able to partially rescue these negative effects of CNTF-ACM (p < 0.05). CNTF-ACM promotes mitochondrial respiration and oxidative stress in cortical neurons through elevating L-type calcium channel activity.

  1. 76 FR 64943 - Proposed Cercla Administrative Cost Recovery Settlement; ACM Smelter and Refinery Site, Located...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-19

    ... AGENCY Proposed Cercla Administrative Cost Recovery Settlement; ACM Smelter and Refinery Site, Located in..., Compensation, and Liability Act, as amended (CERCLA), 42 U.S.C. 9622(i), notice is hereby given of a proposed... portions of Operable Unit 1 of the Site, and to pay $1,050,000.00 to the Hazardous Substance Superfund...

  2. SUPERFUND TREATABILITY CLEARINGHOUSE: FINAL REPORT, PHASE I - IMMEDIATE ASSESSMENT, ACME SOLVENTS SITE

    EPA Science Inventory

    This is a site assessment and feasibility study of incineration alternatives at the ACME Solvents Site at Rockford, Illinois. The document contains laboratory results that are reported to simulate incineration conditions but no details on test methods were provided. The d...

  3. Validation of the Adolescent Concerns Measure (ACM): Evidence from Exploratory and Confirmatory Factor Analysis

    ERIC Educational Resources Information Center

    Ang, Rebecca P.; Chong, Wan Har; Huan, Vivien S.; Yeo, Lay See

    2007-01-01

    This article reports the development and initial validation of scores obtained from the Adolescent Concerns Measure (ACM), a scale which assesses concerns of Asian adolescent students. In Study 1, findings from exploratory factor analysis using 619 adolescents suggested a 24-item scale with four correlated factors--Family Concerns (9 items), Peer…

  4. An audience-channel-message-evaluation (ACME) framework for health communication campaigns.

    PubMed

    Noar, Seth M

    2012-07-01

    Recent reviews of the literature have indicated that a number of health communication campaigns continue to fail to adhere to principles of effective campaign design. The lack of an integrated, organizing framework for the design, implementation, and evaluation of health communication campaigns may contribute to this state of affairs. The current article introduces an audience-channel-message-evaluation (ACME) framework that organizes the major principles of health campaign design, implementation, and evaluation. ACME also explicates the relationships and linkages between the varying principles. Insights from ACME include the following: The choice of audience segment(s) to focus on in a campaign affects all other campaign design choices, including message strategy and channel/component options. Although channel selection influences options for message design, choice of message design also influences channel options. Evaluation should not be thought of as a separate activity, but rather should be infused and integrated throughout the campaign design and implementation process, including formative, process, and outcome evaluation activities. Overall, health communication campaigns that adhere to this integrated set of principles of effective campaign design will have a greater chance of success than those using principles idiosyncratically. These design, implementation, and evaluation principles are embodied in the ACME framework.

  5. Advanced Math: Closing the Equity Gap. Math Works

    ERIC Educational Resources Information Center

    Achieve, Inc., 2013

    2013-01-01

    Minority and low-income students are less likely to have access to, enroll in and succeed in higher-level math courses in high school than their more advantaged peers. Under these circumstances, higher-level math courses function not as the intellectual and practical boost they should be, but as a filter that screens students out of the pathway to…

  6. Math Anxiety and Math Ability in Early Primary School Years

    ERIC Educational Resources Information Center

    Krinzinger, Helga; Kaufmann, Liane; Willmes, Klaus

    2009-01-01

    Mathematical learning disabilities (MLDs) are often associated with math anxiety, yet until now, very little is known about the causal relations between calculation ability and math anxiety during early primary school years. The main aim of this study was to longitudinally investigate the relationship between calculation ability, self-reported…

  7. The Perceptions of Math and Math Education in "Midville," Illinois

    ERIC Educational Resources Information Center

    Lucas, David M.; Fugitt, Jamie

    2009-01-01

    By means of a qualitative research method known as folknography, a concerted effort was made to discern perceptions of math and math education in the rural Midwest. A community that will be referred to as Midville, located in the state of Illinois, was chosen as the target population for this study. The community and surrounding region stands over…

  8. What Specific Preschool Math Skills Predict Later Math Achievement?

    ERIC Educational Resources Information Center

    Nguyen, Tutrang; Watts, Tyler W.; Duncan, Greg J.; Clements, Douglas H.; Sarama, Julie; Wolfe, Christopher B.; Spitler, Mary Elaine

    2015-01-01

    The widespread concern about mathematics achievement has drawn extensive research attention to what skills predict later academic achievement. There is clear and consistent evidence that math achievement at school entry is the strongest predictor of later school success and educational attainment. Early childhood math achievement can thus have…

  9. On-resin conversion of Cys(Acm)-containing peptides to their corresponding Cys(Scm) congeners.

    PubMed

    Mullen, Daniel G; Weigel, Benjamin; Barany, George; Distefano, Mark D

    2010-05-01

    The Acm protecting group for the thiol functionality of cysteine is removed under conditions (Hg(2+)) that are orthogonal to the acidic milieu used for global deprotection in Fmoc-based solid-phase peptide synthesis. This use of a toxic heavy metal for deprotection has limited the usefulness of Acm in peptide synthesis. The Acm group may be converted to the Scm derivative that can then be used as a reactive intermediate for unsymmetrical disulfide formation. It may also be removed by mild reductive conditions to generate unprotected cysteine. Conversion of Cys(Acm)-containing peptides to their corresponding Cys(Scm) derivatives in solution is often problematic because the sulfenyl chloride reagent used for this conversion may react with the sensitive amino acids tyrosine and tryptophan. In this protocol, we report a method for on-resin Acm to Scm conversion that allows the preparation of Cys(Scm)-containing peptides under conditions that do not modify other amino acids.

  10. "Math Anxiety" Explored in Studies

    ERIC Educational Resources Information Center

    Sparks, Sarah D.

    2011-01-01

    Math problems make more than a few students--and even teachers--sweat, but new brain research is providing insights into the earliest causes of the anxiety so often associated with mathematics. Experts argue that "math anxiety" can bring about widespread, intergenerational discomfort with the subject, which could lead to anything from fewer…

  11. Math Fair: Focus on Fractions

    ERIC Educational Resources Information Center

    Mokashi, Neelima A.

    2009-01-01

    This article depicts the rewarding experience of creating mathematical environments for kindergarten and elementary students by focusing on one of the most important and often difficult-to-grasp concepts (fractions) through play methods incorporated into a math fair. The basic concept of a math fair is threefold: (1) to create preplanned,…

  12. Math and Science. IDRA Focus.

    ERIC Educational Resources Information Center

    IDRA Newsletter, 1998

    1998-01-01

    This newsletter theme issue includes six articles on improving math and science education, particularly for poor, Limited-English-Proficient (LEP), and female students. "Effective Math and Science Instruction--The Project Approach for LEP Students" (Joseph Vigil) describes how hands-on science projects can increase student motivation,…

  13. Wake up, because Math Matters

    ERIC Educational Resources Information Center

    Gilpin, Jeanny

    2010-01-01

    This article presents the author's story, as a teacher, about building a Math Matters club and discusses why her students arrived at school before first bell to participate enthusiastically. The author's students seemed to have a negative attitude about math. In giving that stirring motivational speech, she apparently overlooked one important…

  14. Math on the Fast Track

    ERIC Educational Resources Information Center

    Howe, Quincy

    2006-01-01

    In this article, the author relates how a math-assessment software has allowed his school to track the academic progress of its students. The author relates that in the first year that the software was deployed, schoolwide averages in terms of national standing on the math ITBS rose from the 42nd to 59th percentile. In addition, a significant…

  15. Techtalk: Technology and Developmental Math.

    ERIC Educational Resources Information Center

    MacDonald, Lucy; Caverly, David C.

    1999-01-01

    Reviews the evolution of math software from the 1980s to the present. Discusses how current notions of learning styles have changed software applications and how critical thinking and problem solving have impacted software development. Addresses the overall effect of technology on math anxiety and explores what new technology tools are available…

  16. Math Fact Strategies Research Project

    ERIC Educational Resources Information Center

    Boso, Annie

    2011-01-01

    An action research project was conducted in order to determine effective math fact strategies for first graders. The traditional way of teaching math facts included using timed tests and flashcards, with most students counting on their fingers or a number line. Six new research-based strategies were taught and analyzed to decide which methods…

  17. The Diffusion of New Math.

    ERIC Educational Resources Information Center

    Ready, Patricia M.

    The life cycle of "new math" is fertile ground for the study of the diffusion of an innovation. New math arrived in 1958 to save the day for America after the Soviet Union launched Sputnik, the first successful space flight in 1957. In a period of 16 years an entire diffusion cycle was completed throughout the entire educational system…

  18. The Role of Parental Math Anxiety and Math Attitude in Their Children's Math Achievement

    ERIC Educational Resources Information Center

    Soni, Akanksha; Kumari, Santha

    2017-01-01

    The present study investigated the antecedents and consequences of children's math anxiety and math attitude. A total of 595 students aged 10 to 15 years (5th to 10th grades) and 1 parent of each (mother or father) participated in the study. The study was conducted in India, with the study sample drawn from schools in South-West Punjab. Math…

  19. Enhancing Mathematical Communication for Virtual Math Teams

    ERIC Educational Resources Information Center

    Stahl, Gerry; Çakir, Murat Perit; Weimar, Stephen; Weusijana, Baba Kofi; Ou, Jimmy Xiantong

    2010-01-01

    The Math Forum is an online resource center for pre-algebra, algebra, geometry and pre-calculus. Its Virtual Math Teams (VMT) service provides an integrated web-based environment for small teams of people to discuss math and to work collaboratively on math problems or explore interesting mathematical micro-worlds together. The VMT Project studies…

  20. Addressing Math Anxiety in the Classroom

    ERIC Educational Resources Information Center

    Finlayson, Maureen

    2014-01-01

    In today's educational systems, students of all levels of education experience math anxiety. Furthermore, math anxiety is frequently linked to poor achievement in mathematics. The purpose of this study is to examine the causes of math anxiety and to explore strategies which pre-service teachers have identified to overcome math anxiety. The…

  1. Tips for Teaching Math to Elementary Students

    ERIC Educational Resources Information Center

    Scarpello, Gary

    2010-01-01

    Since most elementary school teachers do not hold a degree in mathematics, teaching math may be a daunting task for some. Following are a few techniques to help make teaching and learning math easier and less stressful. First, know that math is a difficult subject to teach--even for math teachers. The subject matter itself is challenging. Second,…

  2. Motivating Students in Math Using Cooperative Learning.

    ERIC Educational Resources Information Center

    Bernero, Jacqueline

    In many elementary classrooms, math tends to be individualized work with repetitive paper-and-pencil assignments. This research project attempted to generate more interest in math, reduce math anxiety, and make math more enjoyable for students. Through the use of cooperative learning, students practiced and developed social skills needed to…

  3. Early Math Experiences and the Facilitative Adult.

    ERIC Educational Resources Information Center

    Allen, K. Eileen; And Others

    These three colloqium papers focus on math readiness and the young child, the use of games in teaching basic math skills, and the teaching of math concepts through informal day care activities. The first paper discusses notions about math readiness. It points out that mental age has little to do with readiness to learn basic concept skills and…

  4. Professional Growth. Integrating Math and Writing.

    ERIC Educational Resources Information Center

    Kay, Cynthia; Charles, Jim

    1995-01-01

    Emphasizes the need to integrate math and writing and shows how writing can assist in understanding math concepts or processes. Suggests activities that encourage writing in mathematics, and suggests how to combine math and writing to create such activities. Provides examples of children's literature that can be used as an introduction into math.…

  5. Trans Fatty Acids

    NASA Astrophysics Data System (ADS)

    Doyle, Ellin

    1997-09-01

    Fats and their various fatty acid components seem to be a perennial concern of nutritionists and persons concerned with healthful diets. Advice on the consumption of saturated, polyunsaturated, monounsaturated, and total fat bombards us from magazines and newspapers. One of the newer players in this field is the group of trans fatty acids found predominantly in partially hydrogenated fats such as margarines and cooking fats. The controversy concerning dietary trans fatty acids was recently addressed in an American Heart Association (AHA) science advisory (1) and in a position paper from the American Society of Clinical Nutrition/American Institute of Nutrition (ASCN/AIN) (2). Both reports emphasize that the best preventive strategy for reducing risk for cardiovascular disease and some types of cancer is a reduction in total and saturated fats in the diet, but a reduction in the intake of trans fatty acids was also recommended. Although the actual health effects of trans fatty acids remain uncertain, experimental evidence indicates that consumption of trans fatty acids adversely affects serum lipid levels. Since elevated levels of serum cholesterol and triacylglycerols are associated with increased risk of cardiovascular disease, it follows that intake of trans fatty acids should be minimized.

  6. Categorization of Computing Education Resources into the ACM Computing Classification System

    SciTech Connect

    Chen, Yinlin; Bogen, Paul Logasa; Fox, Dr. Edward A.; Hsieh, Dr. Haowei; Cassel, Dr. Lillian N.

    2012-01-01

    The Ensemble Portal harvests resources from multiple heterogonous federated collections. Managing these dynamically increasing collections requires an automatic mechanism to categorize records in to corresponding topics. We propose an approach to use existing ACM DL metadata to build classifiers for harvested resources in the Ensemble project. We also present our experience on utilizing the Amazon Mechanical Turk platform to build ground truth training data sets from Ensemble collections.

  7. Effects of activated ACM on expression of signal transducers in cerebral cortical neurons of rats.

    PubMed

    Wang, Xiaojing; Li, Zhengli; Zhu, Changgeng; Li, Zhongyu

    2007-06-01

    To explore the roles of astrocytes in the epileptogenesis, astrocytes and neurons were isolated, purified and cultured in vitro from cerebral cortex of rats. The astrocytes were activated by ciliary neurotrophic factor (CNTF) and astrocytic conditioned medium (ACM) was collected to treat neurons for 4, 8 and 12 h. By using Western blot, the expression of calmodulin dependent protein kinase II (CaMK II), inducible nitric oxide synthase (iNOS) and adenylate cyclase (AC) was detected in neurons. The results showed that the expression of CaMK II, iNOS and AC was increased significantly in the neurons treated with ACM from 4 h to 12 h (P<0.05), and that of iNOS and AC peaked at 8 h and 12 h respectively. It was suggested that there might be some epileptogenic factors in the ACM and such signal pathways as NOS-NO-cGMP, Ca2+/CaM-CaMK II and AC-cAMP-PKA might take part in the signal transduction of epileptogenesis.

  8. Clouds and Precipitation Simulated by the US DOE Accelerated Climate Modeling for Energy (ACME)

    NASA Astrophysics Data System (ADS)

    Xie, S.; Lin, W.; Yoon, J. H.; Ma, P. L.; Rasch, P. J.; Ghan, S.; Zhang, K.; Zhang, Y.; Zhang, C.; Bogenschutz, P.; Gettelman, A.; Larson, V. E.; Neale, R. B.; Park, S.; Zhang, G. J.

    2015-12-01

    A new US Department of Energy (DOE) climate modeling effort is to develop an Accelerated Climate Model for Energy (ACME) to accelerate the development and application of fully coupled, state-of-the-art Earth system models for scientific and energy application. ACME is a high-resolution climate model with a 0.25 degree in horizontal and more than 60 levels in the vertical. It starts from the Community Earth System Model (CESM) with notable changes to its physical parameterizations and other components. This presentation provides an overview on the ACME model's capability in simulating clouds and precipitation and its sensitivity to convection schemes. Results with using several state-of-the-art cumulus convection schemes, including those unified parameterizations that are being developed in the climate community, will be presented. These convection schemes are evaluated in a multi-scale framework including both short-range hindcasts and free-running climate simulations with both satellite data and ground-based measurements. Running climate model in short-range hindcasts has been proven to be an efficient way to understand model deficiencies. The analysis is focused on those systematic errors in clouds and precipitation simulations that are shared in many climate models. The goal is to understand what model deficiencies might be primarily responsible for these systematic errors.

  9. Model Diagnostics for the Department of Energy's Accelerated Climate Modeling for Energy (ACME) Project

    NASA Astrophysics Data System (ADS)

    Smith, B.

    2015-12-01

    In 2014, eight Department of Energy (DOE) national laboratories, four academic institutions, one company, and the National Centre for Atmospheric Research combined forces in a project called Accelerated Climate Modeling for Energy (ACME) with the goal to speed Earth system model development for climate and energy. Over the planned 10-year span, the project will conduct simulations and modeling on DOE's most powerful high-performance computing systems at Oak Ridge, Argonne, and Lawrence Berkeley Leadership Compute Facilities. A key component of the ACME project is the development of an interactive test bed for the advanced Earth system model. Its execution infrastructure will accelerate model development and testing cycles. The ACME Workflow Group is leading the efforts to automate labor-intensive tasks, provide intelligent support for complex tasks and reduce duplication of effort through collaboration support. As part of this new workflow environment, we have created a diagnostic, metric, and intercomparison Python framework, called UVCMetrics, to aid in the testing-to-production execution of the ACME model. The framework exploits similarities among different diagnostics to compactly support diagnosis of new models. It presently focuses on atmosphere and land but is designed to support ocean and sea ice model components as well. This framework is built on top of the existing open-source software framework known as the Ultrascale Visualization Climate Data Analysis Tools (UV-CDAT). Because of its flexible framework design, scientists and modelers now can generate thousands of possible diagnostic outputs. These diagnostics can compare model runs, compare model vs. observation, or simply verify a model is physically realistic. Additional diagnostics are easily integrated into the framework, and our users have already added several. Diagnostics can be generated, viewed, and manipulated from the UV-CDAT graphical user interface, Python command line scripts and programs

  10. A latent profile analysis of math achievement, numerosity, and math anxiety in twins.

    PubMed

    Hart, Sara A; Logan, Jessica A R; Thompson, Lee; Kovas, Yulia; McLoughlin, Gráinne; Petrill, Stephen A

    2016-02-01

    Underperformance in math is a problem with increasing prevalence, complex etiology, and severe repercussions. This study examined the etiological heterogeneity of math performance in a sample of 264 pairs of 12-year-old twins assessed on measures of math achievement, numerosity and math anxiety. Latent profile analysis indicated five groupings of individuals representing different patterns of math achievement, numerosity and math anxiety, coupled with differing degrees of familial transmission. These results suggest that there may be distinct profiles of math achievement, numerosity and anxiety; particularly for students who struggle in math.

  11. A latent profile analysis of math achievement, numerosity, and math anxiety in twins

    PubMed Central

    Hart, Sara A.; Logan, Jessica A.R.; Thompson, Lee; Kovas, Yulia; McLoughlin, Gráinne; Petrill, Stephen A.

    2015-01-01

    Underperformance in math is a problem with increasing prevalence, complex etiology, and severe repercussions. This study examined the etiological heterogeneity of math performance in a sample of 264 pairs of 12-year-old twins assessed on measures of math achievement, numerosity and math anxiety. Latent profile analysis indicated five groupings of individuals representing different patterns of math achievement, numerosity and math anxiety, coupled with differing degrees of familial transmission. These results suggest that there may be distinct profiles of math achievement, numerosity and anxiety; particularly for students who struggle in math. PMID:26957650

  12. Intergenerational Effects of Parents' Math Anxiety on Children's Math Achievement and Anxiety.

    PubMed

    Maloney, Erin A; Ramirez, Gerardo; Gunderson, Elizabeth A; Levine, Susan C; Beilock, Sian L

    2015-09-01

    A large field study of children in first and second grade explored how parents' anxiety about math relates to their children's math achievement. The goal of the study was to better understand why some students perform worse in math than others. We tested whether parents' math anxiety predicts their children's math achievement across the school year. We found that when parents are more math anxious, their children learn significantly less math over the school year and have more math anxiety by the school year's end-but only if math-anxious parents report providing frequent help with math homework. Notably, when parents reported helping with math homework less often, children's math achievement and attitudes were not related to parents' math anxiety. Parents' math anxiety did not predict children's reading achievement, which suggests that the effects of parents' math anxiety are specific to children's math achievement. These findings provide evidence of a mechanism for intergenerational transmission of low math achievement and high math anxiety.

  13. Measurement of math beliefs and their associations with math behaviors in college students.

    PubMed

    Hendy, Helen M; Schorschinsky, Nancy; Wade, Barbara

    2014-12-01

    Our purpose in the present study was to expand understanding of math beliefs in college students by developing 3 new psychometrically tested scales as guided by expectancy-value theory, self-efficacy theory, and health belief model. Additionally, we identified which math beliefs (and which theory) best explained variance in math behaviors and performance by college students and which students were most likely to have problematic math beliefs. Study participants included 368 college math students who completed questionnaires to report math behaviors (attending class, doing homework, reading textbooks, asking for help) and used a 5-point rating scale to indicate a variety of math beliefs. For a subset of 84 students, math professors provided final math grades. Factor analyses produced a 10-item Math Value Scale with 2 subscales (Class Devaluation, No Future Value), a 7-item single-dimension Math Confidence Scale, and an 11-item Math Barriers Scale with 2 subscales (Math Anxiety, Discouraging Words). Hierarchical multiple regression revealed that high levels of the newly discovered class devaluation belief (guided by expectancy-value theory) were most consistently associated with poor math behaviors in college students, with high math anxiety (guided by health belief model) and low math confidence (guided by self-efficacy theory) also found to be significant. Analyses of covariance revealed that younger and male students were at increased risk for class devaluation and older students were at increased risk for poor math confidence.

  14. Low Trans Hydrogenation

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Although hydrogenation has been the technology of choice for fat formulation for many years recent concerns over the health and nutrition of trans fatty acids have had a profound effect on the edible oil industry. Since Jan. 1, 2006, TFA has been required on nutrition labels along with saturated an...

  15. Facts about trans fats

    MedlinePlus

    ... gov/pubmed/24327023 . US Department of Health and Human Services, Food and Drug Administration. Trans fat . Updated June 15, 2015. www.fda.gov/food/populartopics/ucm292278.htm . Accessed May 5, 2015. US Department of Health and Human Services and US Department of Agriculture. 2015 - 2020 ...

  16. Identifying Maths Anxiety in Student Nurses and Focusing Remedial Work

    ERIC Educational Resources Information Center

    Bull, Heather

    2009-01-01

    Maths anxiety interferes with maths cognition and thereby increases the risk of maths errors. To initiate strategies for preventing anxiety-related errors progressing into nursing practice, this study explored the hypothesis that student nurses experience high maths anxiety in association with poor maths performance, and that high maths anxiety is…

  17. Improving Throughput of the ACME Climate Model by Parallel Splitting Atmospheric Physics and Dynamics

    NASA Astrophysics Data System (ADS)

    Caldwell, P.; Taylor, M.

    2015-12-01

    If fluid dynamics and atmospheric physics parameterizations were computed in parallel, they could be calculated simultaneously on separate cores of a supercomputer. This would greatly increase model throughput for high-resolution simulations. Additionally, because atmospheric physics is embarrassingly parallel, more sophisticated physics parameterizations could be used without slowing simulations down by simply increasing the number of cores used. The downside to this approach is that it increases time-truncation error. In this presentation, we demonstrate that parallel splitting the ACME model and using a smaller timestep for physics results in faster, more accurate solutions.

  18. A Latent Profile Analysis of Math Achievement, Numerosity, and Math Anxiety in Twins

    ERIC Educational Resources Information Center

    Hart, Sara A.; Logan, Jessica A. R.; Thompson, Lee; Kovas, Yulia; McLoughlin, Gráinne; Petrill, Stephen A.

    2016-01-01

    Underperformance in math is a problem with increasing prevalence, complex etiology, and severe repercussions. This study examined the etiological heterogeneity of math performance in a sample of 264 pairs of 12-year-old twins assessed on measures of math achievement, numerosity, and math anxiety. Latent profile analysis indicated 5 groupings of…

  19. Math Anxiety, Working Memory, and Math Achievement in Early Elementary School

    ERIC Educational Resources Information Center

    Ramirez, Gerardo; Gunderson, Elizabeth A.; Levine, Susan C.; Beilock, Sian L.

    2013-01-01

    Although math anxiety is associated with poor mathematical knowledge and low course grades (Ashcraft & Krause, 2007), research establishing a connection between math anxiety and math achievement has generally been conducted with young adults, ignoring the emergence of math anxiety in young children. In the current study, we explored whether…

  20. The Relationship between STAR Math Score Gains and Academic Achievement in Math

    ERIC Educational Resources Information Center

    Churchwell, Don Wesley

    2009-01-01

    This study examined the relationship between STAR Math gains and TCAP composite scores. The purpose of this study was to determine if there was a significant relationship between STAR Math pretest and posttest gains over the course of the 2005-2006 academic year through the use of the STAR Math software program and TCAP math composite scores at…

  1. The Effects of the Elevate Math Summer Program on Math Achievement and Algebra Readiness. REL 2015-096

    ERIC Educational Resources Information Center

    Snipes, Jason; Huang, Chun-Wei; Jaquet, Karina; Finkelstein, Neal

    2015-01-01

    The Effects of the Elevate Math summer program on math achievement and algebra readiness: This randomized trial examined the effects of the Elevate Math summer program on math achievement and algebra readiness, as well as math interest and self-efficacy, among rising 8th grade students in California's Silicon Valley. The Elevate Math summer math…

  2. Fatty acids - trans fatty acids

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The data supporting a negative effect of dietary trans fatty acids on cardiovascular disease risk is consistent. The primary dietary sources of trans fatty acids include partially hydrogenated fat and rudiment fat. The adverse effect of trans fatty acids on plasma lipoprotein profiles is consisten...

  3. Math Branding in a Community College Library

    ERIC Educational Resources Information Center

    Brantz, Malcolm; Sadowski, Edward B.

    2010-01-01

    As a strategy to promote the Arapahoe Community College Library's collections and services, the Library undertook to brand itself as a math resource center. In promoting one area of expertise, math was selected to help address the problem of a large portion of high school graduates' inability to work at college-level math. A "Math…

  4. The Case for Creativity in Math Education

    ERIC Educational Resources Information Center

    Lonergan, Mark

    2007-01-01

    After 11 years of teaching, the question the author worries about now is "How do we do this well? How do we engage students in math classes? How do we convince them that math is beautiful, fun and powerful?" For the math department at the author's school, Boston Arts Academy (BAA), the answer has been to infuse creativity into math…

  5. Study Gives Edge to 2 Math Programs

    ERIC Educational Resources Information Center

    Viadero, Debra

    2009-01-01

    This article reports that two programs for teaching mathematics in the early grades--Math Expressions and Saxon Math--emerged as winners in early findings released last week from a large-scale federal experiment that pits four popular, and philosophically distinct, math curricula against one another. But the results don't promise to end the…

  6. Persistence of Fall 1988 Math 310, Math 12 & Math 13 Students through Transfer Level Math over Four Academic Years (Fall 1988-Spring 1992). Research Report #269.

    ERIC Educational Resources Information Center

    Kangas, Jon; Ma, Tony

    A study was conducted at Evergreen Valley College (EVC) and San Jose City College (SJCC) to determine persistence rates over 4 academic years for students with no previous college experience who entered arithmetic (Math 310), beginning algebra (Math 12), and intermediate algebra (Math 13) courses in fall 1988. The study sought to determine…

  7. Recognizing and Nurturing Math Talent in Children

    ERIC Educational Resources Information Center

    Gavin, M. Katherine; Firmender, Janine M.; Casa, Tutita M.

    2013-01-01

    What is math talent? Ten different educators will most likely provide 10 different answers. Researchers state that one reason mathematical talent is difficult to describe involves the different ways children manifest math talent. Children can display math talent in three different ways: (a) those who reason abstractly and have an "algebraic…

  8. See the Math with Your Binoculars!

    ERIC Educational Resources Information Center

    Roman, Harry T.

    2007-01-01

    Teachers and students will find a very practical math application right in a pair of common binoculars. This article describes a procedure to get a bit of math practice and analysis. It presents a math activity with elementary students on taking measurements using the binoculars. (Contains 1 table.)

  9. Math Sense: Comprehensive Review. Teacher's Resource Guide.

    ERIC Educational Resources Information Center

    Halloran, Pamela

    This book is a teacher's resource guide designed to help students gain the range of math skills they need to succeed in life, work, and on standardized tests; overcome math anxiety; discover math as interesting and purposeful; and develop good number sense. Topics covered in this book include whole numbers; decimals and money; fractions, ratios,…

  10. Math Sense: Whole Numbers and Money.

    ERIC Educational Resources Information Center

    Phillips, Jan

    This book is designed to help students gain the range of math skills they need to succeed in life, work, and on standardized tests; overcome math anxiety; discover math as interesting and purposeful; and develop good number sense. Topics covered in this book include whole numbers and addition, subtraction, multiplication, and division. Lessons are…

  11. Math Sense: Decimals, Fractions, Ratios, and Percents.

    ERIC Educational Resources Information Center

    Frechette, Ellen Carley

    This book is designed to help adults gain the range of math skills they need to succeed in life and work and on standardized tests including the GED. It is expected to help students overcome math anxiety, discover math as interesting and purposeful, and develop good number sense. Lessons are organized around four strands: (1) skill lessons…

  12. Math Sense: Measurement and Data Analysis.

    ERIC Educational Resources Information Center

    Mitchell, Robert P.

    This book is designed to help students gain the range of math skills they need to succeed in life, work, and on standardized tests; overcome math anxiety; discover math as interesting and purposeful; and develop good number sense. Topics covered in this book include measurement and data analysis such as measuring distance, space, time, capacity,…

  13. Superfund Record of Decision (EPA Region 5): Acme Solvents, Morristown, Illinois, September 1985. Final report

    SciTech Connect

    Not Available

    1985-09-27

    The Acme Solvents Reclaiming, Inc. facility is located approximately five miles south of Rockford, Illinois. From 1960 until 1973, the facility served as a disposal site for paints, oils and still bottoms from the solvent reclamation plant located in Rockford. In addition, empty drums were stored onsite. Wastes were dumped into depressions created from either previous quarrying activities or by scraping overburden from the near surface bedrock to form berms. In September 1972, the Illinois Pollution Control Board (IPCB) ordered Acme to remove all drums and wastes from the facility and to backfill the lagoons. Follow-up inspections revealed that wastes and crushed drums were being left onsite and merely covered with soil. Sampling of the site revealed high concentrations of chlorinated organics in the drinking water. The major source of hazardous substances at the facility are the waste disposal mounds. These mounds contain volatile and semi-volatile organic compounds and concentrations of PCBs up to several hundred mg/kg. The selected remedial action is included.

  14. Understanding the Home Math Environment and Its Role in Predicting Parent Report of Children's Math Skills.

    PubMed

    Hart, Sara A; Ganley, Colleen M; Purpura, David J

    2016-01-01

    There is a growing literature concerning the role of the home math environment in children's math development. In this study, we examined the relation between these constructs by specifically addressing three goals. The first goal was to identify the measurement structure of the home math environment through a series of confirmatory factor analyses. The second goal was to examine the role of the home math environment in predicting parent report of children's math skills. The third goal was to test a series of potential alternative explanations for the relation between the home math environment and parent report of children's skills, specifically the direct and indirect role of household income, parent math anxiety, and parent math ability as measured by their approximate number system performance. A final sample of 339 parents of children aged 3 through 8 drawn from Mechanical Turk answered a questionnaire online. The best fitting model of the home math environment was a bifactor model with a general factor representing the general home math environment, and three specific factors representing the direct numeracy environment, the indirect numeracy environment, and the spatial environment. When examining the association of the home math environment factors to parent report of child skills, the general home math environment factor and the spatial environment were the only significant predictors. Parents who reported doing more general math activities in the home reported having children with higher math skills, whereas parents who reported doing more spatial activities reported having children with lower math skills.

  15. Is Mathematical Anxiety Always Bad for Math Learning: The Role of Math Motivation

    PubMed Central

    Wang, Zhe; Lukowski, Sarah L.; Hart, Sara Ann; Lyons, Ian M.; Thompson, Lee A.; Kovas, Yulia; Mazzocco, Michèle M.; Plomin, Robert; Petrill, Stephen A.

    2015-01-01

    The linear relations between math anxiety and math cognition have been frequently studied. However, the relations between anxiety and performance on complex cognitive tasks have been repeatedly demonstrated to follow a curvilinear fashion. Given the lack of attention to the possibility of such complex interplay between emotion and cognition in the math learning literature, the current study aimed to address this gap via exploring the relations between math anxiety, math motivation, and math cognition. The current study consisted of two samples. One sample included 262 pairs of young adolescent twins and the other included 237 adult college students. Participants self-reported their math anxiety and math motivation. Math cognition was assessed using a comprehensive battery of mathematics tasks. In both samples, results showed inverted-U relations between math anxiety and math performance in students with high intrinsic math motivation, and modest negative associations between math anxiety and math performance in students with low intrinsic math motivation. However, this pattern was not observed in tasks assessing student’s nonsymbolic and symbolic number estimation. These findings may help advance our understanding of mathematics learning processes and may provide important insights for treatment programs that target improving mathematics learning experiences and mathematical skills. PMID:26518438

  16. Math and the Real World: Fun and Games. Teaching Math.

    ERIC Educational Resources Information Center

    May, Lola

    1993-01-01

    Describes three simple games that do not involve numbers and that can be used to teach children problem-solving strategies and math skills. The games are Tick-Tack-Toe; Jest, a game that uses a blocking strategy; and Nim, a game that uses a capturing strategy. All three games force students to plan ahead and calculate possible outcomes using…

  17. Americans Need Advanced Math to Stay Globally Competitive. Math Works

    ERIC Educational Resources Information Center

    Achieve, Inc., 2013

    2013-01-01

    No student who hopes to compete in today's rapidly evolving global economy and job market can afford to graduate from high school with weak mathematical skills, which include the ability to use logic, reason, and solve problems. The benefits associated with improving the math performance of American students also extend to the larger U.S. economy.…

  18. Mobile Math: Math Educators and Students Engage in Mobile Learning

    ERIC Educational Resources Information Center

    Franklin, Teresa; Peng, Li-Wei

    2008-01-01

    The public and educational communities are aware of the continuing crisis in math education in our middle schools and the convergence of technologies for teaching and learning. This paper presents a case study in which iPod Touch[R] was used to help middle school students learn about algebraic equations and, in particular, the concept of slope,…

  19. Clinical isolates of Enterococcus faecium exhibit strain-specific collagen binding mediated by Acm, a new member of the MSCRAMM family.

    PubMed

    Nallapareddy, Sreedhar R; Weinstock, George M; Murray, Barbara E

    2003-03-01

    A collagen-binding adhesin of Enterococcus faecium, Acm, was identified. Acm shows 62% similarity to the Staphylococcus aureus collagen adhesin Cna over the entire protein and is more similar to Cna (60% and 75% similarity with Cna A and B domains respectively) than to the Enterococcus faecalis collagen-binding adhesin, Ace, which shares homology with Acm only in the A domain. Despite the detection of acm in 32 out of 32 E. faecium isolates, only 11 of these (all clinical isolates, including four vancomycin-resistant endocarditis isolates and seven other isolates) exhibited binding to collagen type I (CI). Although acm from three CI-binding vancomycin-resistant E. faecium clinical isolates showed 100% identity, analysis of acm genes and their promoter regions from six non-CI-binding strains identified deletions or mutations that introduced stop codons and/or IS elements within the gene or the promoter region in five out of six strains, suggesting that the presence of an intact functional acm gene is necessary for binding of E. faecium strains to CI. Recombinant Acm A domain showed specific and concentration-dependent binding to collagen, and this protein competed with E. faecium binding to immobilized CI. Consistent with the adherence phenotype and sequence data, probing with Acm-specific IgGs purified from anti-recombinant Acm A polyclonal rabbit serum confirmed the surface expression of Acm in three out of three collagen-binding clinical isolates of E. faecium tested, but in none of the strains with a non-functional pseudo acm gene. Introduction of a functional acm gene into two non-CI-binding natural acm mutant strains conferred a CI-binding phenotype, further confirming that native Acm is sufficient for the binding of E. faecium to CI. These results demonstrate that acm, which encodes a potential virulence factor, is functional only in certain infection-derived clinical isolates of E. faecium, and suggest that Acm is the primary adhesin responsible for the

  20. Meeting a Math Achievement Crisis

    ERIC Educational Resources Information Center

    Jennings, Lenora; Likis, Lori

    2005-01-01

    An urban community spotlighted declining mathematics achievement and took some measures, in which the students' performance increased substantially. The Benjamin Banneker Charter Public School in Cambridge, Massachusetts, engaged the entire community and launched the campaign called "Math Everywhere", which changed Benjamin Banneker's…

  1. Math: Basic Skills Content Standards

    ERIC Educational Resources Information Center

    CASAS - Comprehensive Adult Student Assessment Systems (NJ1), 2008

    2008-01-01

    This document presents content standards tables for math. [CASAS content standards tables are designed for educators at national, state and local levels to inform the alignment of content standards, instruction and assessment. The Content Standards along with the CASAS Competencies form the basis of the CASAS integrated assessment and curriculum…

  2. Math and Science. IDRA Focus.

    ERIC Educational Resources Information Center

    IDRA Newsletter, 1995

    1995-01-01

    This theme issue contains six articles on improving math and science education for minority group students, particularly language-minority students. "Accelerating Content Area Gains for English Language Learners" (Laura Chris Green) describes the Young Scientists Acquiring English project, which seeks to improve the content-area…

  3. Exploring Our Complex Math Identities

    ERIC Educational Resources Information Center

    Leatham, Keith R.; Hill, Diane S.

    2010-01-01

    In this article, the authors discuss some of the dispositions that comprise students' (and teachers') relationships with mathematics--what they call a "mathematical identity." They define "mathematical identity" as an individual's "relationship" with mathematics. They present three reflective tasks that can be used with math students at all levels…

  4. Developmental Math: What's the Answer?

    ERIC Educational Resources Information Center

    Cafarella, Brian

    2016-01-01

    Developmental mathematics has been under the radar within higher education for some time. The reality is that there are many proven best practices in developmental math. Unfortunately, there are many obstacles that prevent student success. Moreover, the high rates of attrition and failure have led state legislators and college administrators to…

  5. The Jaime Escalante Math Program.

    ERIC Educational Resources Information Center

    Escalante, Jaime

    This article describes the Jaime Escalante Math Program, a system that in 1989 helped an East Los Angeles high school set a record by administering over 450 Advanced Placement exams, having administered only 10 tests in 1978. The article is presented in three sections. The first section describes the program, discussing origins and backgrounds:…

  6. Using Math With Maple Sugaring.

    ERIC Educational Resources Information Center

    Christenson, Gary

    1984-01-01

    Suggest several math activities using the simple technique of tapping a sugar maple tree for sap. Information and activities presented are useful in tapping one or two trees on school property, helping students who tap trees at home, or leading a field trip to a nearby maple sugaring site. (ERB)

  7. Business Math in Everyday Life.

    ERIC Educational Resources Information Center

    McGee, Phil

    The material presented in this booklet is designed to provide supplemental information and exercises to aid in the development of basic everyday skills in business math. Seven units are presented with each unit containing basic information on the unit topic, followed by student exercises, and a review section. The seven units are (1) check writing…

  8. A Model for Math Modeling

    ERIC Educational Resources Information Center

    Lin, Tony; Erfan, Sasan

    2016-01-01

    Mathematical modeling is an open-ended research subject where no definite answers exist for any problem. Math modeling enables thinking outside the box to connect different fields of studies together including statistics, algebra, calculus, matrices, programming and scientific writing. As an integral part of society, it is the foundation for many…

  9. A Bold New Math Class

    ERIC Educational Resources Information Center

    Khan, Salman; Slavitt, Elizabeth

    2013-01-01

    Summit San Jose is part of the Summit Public Schools network, a group of charter schools in California's Bay Area. In 2011, when Summit San Jose first opened its new high school with a cohort of 9th graders, the teachers decided to pilot Khan Academy. At the time, they had piloted their math resources and platform with five classrooms in Los…

  10. Math Anxiety in the Classroom.

    ERIC Educational Resources Information Center

    Sherard, Wade H.

    1981-01-01

    The author draws from the literature eight specific guidelines for classroom teachers to help them prevent or ameliorate students' math anxiety. Suggestions include: avoid sex stereotyping; help students develop self-confidence; concentrate on problem solving, spatial skills, and the language of mathematics; and provide a relaxed, supportive…

  11. Three brief assessments of math achievement.

    PubMed

    Steiner, Eric T; Ashcraft, Mark H

    2012-12-01

    Because of wide disparities in college students' math knowledge-that is, their math achievement-studies of cognitive processing in math tasks also need to assess their individual level of math achievement. For many research settings, however, using existing math achievement tests is either too costly or too time consuming. To solve this dilemma, we present three brief tests of math achievement here, two drawn from the Wide Range Achievement Test and one composed of noncopyrighted items. All three correlated substantially with the full achievement test and with math anxiety, our original focus, and all show acceptable to excellent reliability. When lengthy testing is not feasible, one of these brief tests can be substituted.

  12. Affective and Motivational Factors Mediate the Relation between Math Skills and Use of Math in Everyday Life

    PubMed Central

    Jansen, Brenda R. J.; Schmitz, Eva A.; van der Maas, Han L. J.

    2016-01-01

    This study focused on the use of math in everyday life (the propensity to recognize and solve quantitative issues in real life situations). Data from a Dutch nation-wide research on math among adults (N = 521) were used to investigate the question whether math anxiety and perceived math competence mediated the relationship between math skills and use of math in everyday life, taken gender differences into account. Results showed that women reported higher math anxiety, lower perceived math competence, and lower use of math in everyday life, compared to men. Women's skills were estimated at a lower level than men's. For both women and men, higher skills were associated with higher perceived math competence, which in turn was associated with more use of math in everyday life. Only for women, math anxiety also mediated the relation between math skills and use of math in everyday life. PMID:27148122

  13. AcmB Is an S-Layer-Associated β-N-Acetylglucosaminidase and Functional Autolysin in Lactobacillus acidophilus NCFM

    PubMed Central

    Johnson, Brant R.

    2016-01-01

    ABSTRACT Autolysins, also known as peptidoglycan hydrolases, are enzymes that hydrolyze specific bonds within bacterial cell wall peptidoglycan during cell division and daughter cell separation. Within the genome of Lactobacillus acidophilus NCFM, there are 11 genes encoding proteins with peptidoglycan hydrolase catalytic domains, 9 of which are predicted to be functional. Notably, 5 of the 9 putative autolysins in L. acidophilus NCFM are S-layer-associated proteins (SLAPs) noncovalently colocalized along with the surface (S)-layer at the cell surface. One of these SLAPs, AcmB, a β-N-acetylglucosaminidase encoded by the gene lba0176 (acmB), was selected for functional analysis. In silico analysis revealed that acmB orthologs are found exclusively in S-layer- forming species of Lactobacillus. Chromosomal deletion of acmB resulted in aberrant cell division, autolysis, and autoaggregation. Complementation of acmB in the ΔacmB mutant restored the wild-type phenotype, confirming the role of this SLAP in cell division. The absence of AcmB within the exoproteome had a pleiotropic effect on the extracellular proteins covalently and noncovalently bound to the peptidoglycan, which likely led to the observed decrease in the binding capacity of the ΔacmB strain for mucin and extracellular matrices fibronectin, laminin, and collagen in vitro. These data suggest a functional association between the S-layer and the multiple autolysins noncovalently colocalized at the cell surface of L. acidophilus NCFM and other S-layer-producing Lactobacillus species. IMPORTANCE Lactobacillus acidophilus is one of the most widely used probiotic microbes incorporated in many dairy foods and dietary supplements. This organism produces a surface (S)-layer, which is a self-assembling crystalline array found as the outermost layer of the cell wall. The S-layer, along with colocalized associated proteins, is an important mediator of probiotic activity through intestinal adhesion and modulation of

  14. Autonomic Cluster Management System (ACMS): A Demonstration of Autonomic Principles at Work

    NASA Technical Reports Server (NTRS)

    Baldassari, James D.; Kopec, Christopher L.; Leshay, Eric S.; Truszkowski, Walt; Finkel, David

    2005-01-01

    Cluster computing, whereby a large number of simple processors or nodes are combined together to apparently function as a single powerful computer, has emerged as a research area in its own right. The approach offers a relatively inexpensive means of achieving significant computational capabilities for high-performance computing applications, while simultaneously affording the ability to. increase that capability simply by adding more (inexpensive) processors. However, the task of manually managing and con.guring a cluster quickly becomes impossible as the cluster grows in size. Autonomic computing is a relatively new approach to managing complex systems that can potentially solve many of the problems inherent in cluster management. We describe the development of a prototype Automatic Cluster Management System (ACMS) that exploits autonomic properties in automating cluster management.

  15. Sparse Polynomial Chaos Surrogate for ACME Land Model via Iterative Bayesian Compressive Sensing

    NASA Astrophysics Data System (ADS)

    Sargsyan, K.; Ricciuto, D. M.; Safta, C.; Debusschere, B.; Najm, H. N.; Thornton, P. E.

    2015-12-01

    For computationally expensive climate models, Monte-Carlo approaches of exploring the input parameter space are often prohibitive due to slow convergence with respect to ensemble size. To alleviate this, we build inexpensive surrogates using uncertainty quantification (UQ) methods employing Polynomial Chaos (PC) expansions that approximate the input-output relationships using as few model evaluations as possible. However, when many uncertain input parameters are present, such UQ studies suffer from the curse of dimensionality. In particular, for 50-100 input parameters non-adaptive PC representations have infeasible numbers of basis terms. To this end, we develop and employ Weighted Iterative Bayesian Compressive Sensing to learn the most important input parameter relationships for efficient, sparse PC surrogate construction with posterior uncertainty quantified due to insufficient data. Besides drastic dimensionality reduction, the uncertain surrogate can efficiently replace the model in computationally intensive studies such as forward uncertainty propagation and variance-based sensitivity analysis, as well as design optimization and parameter estimation using observational data. We applied the surrogate construction and variance-based uncertainty decomposition to Accelerated Climate Model for Energy (ACME) Land Model for several output QoIs at nearly 100 FLUXNET sites covering multiple plant functional types and climates, varying 65 input parameters over broad ranges of possible values. This work is supported by the U.S. Department of Energy, Office of Science, Biological and Environmental Research, Accelerated Climate Modeling for Energy (ACME) project. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.

  16. ACME: automated cell morphology extractor for comprehensive reconstruction of cell membranes.

    PubMed

    Mosaliganti, Kishore R; Noche, Ramil R; Xiong, Fengzhu; Swinburne, Ian A; Megason, Sean G

    2012-01-01

    The quantification of cell shape, cell migration, and cell rearrangements is important for addressing classical questions in developmental biology such as patterning and tissue morphogenesis. Time-lapse microscopic imaging of transgenic embryos expressing fluorescent reporters is the method of choice for tracking morphogenetic changes and establishing cell lineages and fate maps in vivo. However, the manual steps involved in curating thousands of putative cell segmentations have been a major bottleneck in the application of these technologies especially for cell membranes. Segmentation of cell membranes while more difficult than nuclear segmentation is necessary for quantifying the relations between changes in cell morphology and morphogenesis. We present a novel and fully automated method to first reconstruct membrane signals and then segment out cells from 3D membrane images even in dense tissues. The approach has three stages: 1) detection of local membrane planes, 2) voting to fill structural gaps, and 3) region segmentation. We demonstrate the superior performance of the algorithms quantitatively on time-lapse confocal and two-photon images of zebrafish neuroectoderm and paraxial mesoderm by comparing its results with those derived from human inspection. We also compared with synthetic microscopic images generated by simulating the process of imaging with fluorescent reporters under varying conditions of noise. Both the over-segmentation and under-segmentation percentages of our method are around 5%. The volume overlap of individual cells, compared to expert manual segmentation, is consistently over 84%. By using our software (ACME) to study somite formation, we were able to segment touching cells with high accuracy and reliably quantify changes in morphogenetic parameters such as cell shape and size, and the arrangement of epithelial and mesenchymal cells. Our software has been developed and tested on Windows, Mac, and Linux platforms and is available

  17. Self-Regulation and Math Attitudes: Effects on Academic Performance in Developmental Math Courses at a Community College

    ERIC Educational Resources Information Center

    Otts, Cynthia D.

    2010-01-01

    The purpose of the study was to investigate the relationship among math attitudes, self-regulated learning, and course outcomes in developmental math. Math attitudes involved perceived usefulness of math and math anxiety. Self-regulated learning represented the ability of students to control cognitive, metacognitive, and behavioral aspects of…

  18. Does Math Self-Efficacy Mediate the Effect of the Perceived Classroom Environment on Standardized Math Test Performance?

    ERIC Educational Resources Information Center

    Fast, Lisa A.; Lewis, James L.; Bryant, Michael J.; Bocian, Kathleen A.; Cardullo, Richard A.; Rettig, Michael; Hammond, Kimberly A.

    2010-01-01

    We examined the effect of the perceived classroom environment on math self-efficacy and the effect of math self-efficacy on standardized math test performance. Upper elementary school students (N = 1,163) provided self-reports of their perceived math self-efficacy and the degree to which their math classroom environment was mastery oriented,…

  19. <math>PTmath>-symmetric slowing down of decoherence

    SciTech Connect

    Gardas, Bartlomiej; Deffner, Sebastian; Saxena, Avadh Behari

    2016-10-27

    Here, we investigate <math>PTmath>-symmetric quantum systems ultraweakly coupled to an environment. We find that such open systems evolve under <math>PTmath>-symmetric, purely dephasing and unital dynamics. The dynamical map describing the evolution is then determined explicitly using a quantum canonical transformation. Furthermore, we provide an explanation of why <math>PTmath>-symmetric dephasing-type interactions lead to a critical slowing down of decoherence. This effect is further exemplified with an experimentally relevant system, a <math>PTmath>-symmetric qubit easily realizable, e.g., in optical or microcavity experiments.

  20. Greg Tang: Making Math Count

    ERIC Educational Resources Information Center

    Pierpont, Katherine

    2006-01-01

    Greg Tang has a resume that could get his foot in the door to a lot of places. A graduate of Harvard with both a B.A. and M.A. in economics, Tang has found success as a business executive, a speechwriter, a software designer and owner of a Tae Kwon Do school. After the publication of his first best-selling book for children, "The Grapes of Math"…

  1. Productive failure in learning math.

    PubMed

    Kapur, Manu

    2014-06-01

    When learning a new math concept, should learners be first taught the concept and its associated procedures and then solve problems, or solve problems first even if it leads to failure and then be taught the concept and the procedures? Two randomized-controlled studies found that both methods lead to high levels of procedural knowledge. However, students who engaged in problem solving before being taught demonstrated significantly greater conceptual understanding and ability to transfer to novel problems than those who were taught first. The second study further showed that when given an opportunity to learn from the failed problem-solving attempts of their peers, students outperformed those who were taught first, but not those who engaged in problem solving first. Process findings showed that the number of student-generated solutions significantly predicted learning outcomes. These results challenge the conventional practice of direct instruction to teach new math concepts and procedures, and propose the possibility of learning from one's own failed problem-solving attempts or those of others before receiving instruction as alternatives for better math learning.

  2. A Math Intervention for Third Grade Latino English Language Learners at Risk for Math Disabilities

    ERIC Educational Resources Information Center

    Orosco, Michael J.

    2014-01-01

    Word problems for English language learners (ELLs) at risk for math disabilities are challenging in terms of the constant need to develop precise math language and comprehension knowledge. As a result of this, ELLs may not only need math support but also reading and linguistic support. The purpose of this study was to assess the effectiveness of a…

  3. Math Matters: MDRC's Projects in Math for Low-Income Students, from Preschool to College

    ERIC Educational Resources Information Center

    MDRC, 2015

    2015-01-01

    In an increasingly technological world, developing basic math skills is crucial. Headlines regularly be-moan the international ranking of American students on math proficiency, and students from low-income families do worse in math than their more affluent peers. The federal Bureau of Labor Statistics projects that employment in occupations…

  4. Advanced Math Course Taking: Effects on Math Achievement and College Enrollment

    ERIC Educational Resources Information Center

    Byun, Soo-yong; Irvin, Matthew J.; Bell, Bethany A.

    2015-01-01

    Using data from the Educational Longitudinal Study of 2002-2006, the authors investigated the effects of advanced math course taking on math achievement and college enrollment and how such effects varied by socioeconomic status and race/ethnicity. Results from propensity score matching and sensitivity analyses showed that advanced math course…

  5. Math and Science Are America's Future. National Math and Science Initiative Annual Report, 2008

    ERIC Educational Resources Information Center

    National Math and Science Initiative, 2008

    2008-01-01

    This paper presents the annual report of the National Math and Science Initiative (NMSI) for 2008. Eighteen months ago, the National Math and Science Initiative did not exist. Today NMSI is helping lead the country forward in math and science. In just 18 months, NMSI has rolled out the first round of grants and has implemented programs in 14…

  6. Math Performance as a Function of Math Anxiety and Arousal Performance Theory

    ERIC Educational Resources Information Center

    Farnsworth, Donald M., Jr.

    2009-01-01

    While research continues to link increased math anxiety with reduced working memory, the exact nature of the relationship remains elusive. In addition, research regarding the extent of the impact math anxiety has on working memory is contradictory. This research clarifies the directional nature of math anxiety as it pertains to working memory, and…

  7. Using an Intelligent Tutor and Math Fluency Training to Improve Math Performance

    ERIC Educational Resources Information Center

    Arroyo, Ivon; Royer, James M.; Woolf, Beverly P.

    2011-01-01

    This article integrates research in intelligent tutors with psychology studies of memory and math fluency (the speed to retrieve or calculate answers to basic math operations). It describes the impact of computer software designed to improve either strategic behavior or math fluency. Both competencies are key to improved performance and both…

  8. On the relationship between math anxiety and math achievement in early elementary school: The role of problem solving strategies.

    PubMed

    Ramirez, Gerardo; Chang, Hyesang; Maloney, Erin A; Levine, Susan C; Beilock, Sian L

    2016-01-01

    Even at young ages, children self-report experiencing math anxiety, which negatively relates to their math achievement. Leveraging a large dataset of first and second grade students' math achievement scores, math problem solving strategies, and math attitudes, we explored the possibility that children's math anxiety (i.e., a fear or apprehension about math) negatively relates to their use of more advanced problem solving strategies, which in turn relates to their math achievement. Our results confirm our hypothesis and, moreover, demonstrate that the relation between math anxiety and math problem solving strategies is strongest in children with the highest working memory capacity. Ironically, children who have the highest cognitive capacity avoid using advanced problem solving strategies when they are high in math anxiety and, as a result, underperform in math compared with their lower working memory peers.

  9. Mathematics anxiety: separating the math from the anxiety.

    PubMed

    Lyons, Ian M; Beilock, Sian L

    2012-09-01

    Anxiety about math is tied to low math grades and standardized test scores, yet not all math-anxious individuals perform equally poorly in math. We used functional magnetic resonance imaging to separate neural activity during the anticipation of doing math from activity during math performance itself. For higher (but not lower) math-anxious individuals, increased activity in frontoparietal regions when simply anticipating doing math mitigated math-specific performance deficits. This network included bilateral inferior frontal junction, a region involved in cognitive control and reappraisal of negative emotional responses. Furthermore, the relation between frontoparietal anticipatory activity and highly math-anxious individuals' math deficits was fully mediated (or accounted for) by activity in caudate, nucleus accumbens, and hippocampus during math performance. These subcortical regions are important for coordinating task demands and motivational factors during skill execution. Individual differences in how math-anxious individuals recruit cognitive control resources prior to doing math and motivational resources during math performance predict the extent of their math deficits. This work suggests that educational interventions emphasizing control of negative emotional responses to math stimuli (rather than merely additional math training) will be most effective in revealing a population of mathematically competent individuals, who might otherwise go undiscovered.

  10. Asteroids, comets, Kuiper Belt objects, meteors: the ACM (AKM) 2002 perspective

    NASA Astrophysics Data System (ADS)

    Binzel, Richard P.

    2002-11-01

    An impressionistic overview is given on the state of science of Asteroider, Kometer, Meteorer (AKM), where the Swedish spelling is adopted in recognition of the origin of the ACM conference series. Asteroider (asteroids) are a field that has come of age to the point of asking sophisticated geological and geophysical questions based on dedicated spacecraft missions. Kometer (comets) are coming of age with a strong international emphasis toward new comet missions and ever increasing sophistication of Earth-based observations. K also stands for Kuiper belt objects, a field that wasn't invented when our conference series began but whose inclusion we embrace and recognize as being integral to our science. (Hence the recommendation that we adopt the moniker AKM to proclaim fully our inclusivity) KBOs are an emerging field, perhaps analogous to a fast growing child. The presently known number of KBOs is comparable to the number of known main-belt asteroids in 1900, suggesting that we are just beginning to learn about this region. Meteorer (meteors) is a rejuvenated field that has enjoyed spectacular recent successes in detailed predictions of the Leonid shower and in just recently recording the fall and recovering the Neuschwanstein meteorite. The future outlook portends the greatest advancement in K (kometer and KBOs) with broad interdisciplinary implications.

  11. Preliminary survey report: control technology for the ceramic industry at Acme Brick Company, Malvern, Arkansas

    SciTech Connect

    Godbey, F.W.

    1983-06-01

    Health-hazard control methods, work processes, and existing control technologies used in the manufacture of brick were surveyed at Acme Brick Company, Malvern, Arkansas in June, 1983. The company employed about 32 workers to produce structural brick from alluvial clay, free clay, shale, and aggregate. A potential hazard existed from silica exposure since the clays contained about 20% quartz. Raw materials were transported in a cab-enclosed front-end loader to feeders that delivered the materials to a crusher. Blended coarsely crushed material was moved by conveyor to a hammer mill for fine crushing. Production-size product was transported by overhead conveyor to storage silos in the production building. The entire material particle-size reduction process was completely automated. The clay-preparation building and raw-material storage area were isolated from the production building, and only two workers performed the crushing and grinding operations. Material transfer points had removable covers, and a water-mist spray was used on one conveyor of each line. The operation was monitored from a totally enclosed air-conditioned control room. Head and eye protection were required. The author does not recommend an in-depth study of control technologies of the company.

  12. Is math anxiety in the secondary classroom limiting physics mastery? A study of math anxiety and physics performance

    NASA Astrophysics Data System (ADS)

    Mercer, Gary J.

    This quantitative study examined the relationship between secondary students with math anxiety and physics performance in an inquiry-based constructivist classroom. The Revised Math Anxiety Rating Scale was used to evaluate math anxiety levels. The results were then compared to the performance on a physics standardized final examination. A simple correlation was performed, followed by a multivariate regression analysis to examine effects based on gender and prior math background. The correlation showed statistical significance between math anxiety and physics performance. The regression analysis showed statistical significance for math anxiety, physics performance, and prior math background, but did not show statistical significance for math anxiety, physics performance, and gender.

  13. Troubles of Understanding in Virtual Math Teams

    ERIC Educational Resources Information Center

    Zhou, Nan

    2010-01-01

    When groups engage in math problem solving in an online environment like the VMT (Virtual Math Teams) service, they can face significant challenges from troubles of individual and group understanding that emerge in their problem-solving process. We are interested in how shared understanding is interactionally constructed and accomplished in a…

  14. Infusing the Arts into Literacy and Math

    ERIC Educational Resources Information Center

    Principal, 2012

    2012-01-01

    Schools that are integrating the arts into literacy, math, and other core subjects are dispelling the notion that there's an either-or choice in education--either you focus on literacy and math or you provide a well-rounded curriculum in the arts and other subjects. Crayola grant-recipient schools are demonstrating that you can do both--and end up…

  15. Math 110 Sticker Caper: A Retention Intervention.

    ERIC Educational Resources Information Center

    Boyd, Vivian; And Others

    Students enrolled in two sections of college algebra (Math 110) at the University of Maryland in spring 1984 were informed about assistance available from the Math Lab. They were also informed that a sticker would be attached to any one of the four semester exams when grades indicated that the student should pursue one or more of the Lab services.…

  16. A Preliminary "Basic Math Program" Proposal.

    ERIC Educational Resources Information Center

    Luhring, Richard

    This report proposes a preliminary basic math program that may help mitigate the student attrition problem at Contra Costa College (California). For the purposes of this proposal, Math 101, 115, and 118 are identified as courses to be included in the program. The essential features of this proposed curriculum are summarized as follows: (1) it…

  17. Math on the Web: A Status Report.

    ERIC Educational Resources Information Center

    Miner, Robert; Topping, Paul

    This publication reports on resources on the Web for the area of math. A quick look is given at innovative sites under the areas of new resources for students, new ways for teachers and students to interact, new ways of presenting math, and new tools for research. Next, advantages and disadvantages are identified for each of the following…

  18. Mini-Portfolio on Math and Science.

    ERIC Educational Resources Information Center

    Teaching PreK-8, 1996

    1996-01-01

    Presents six articles dealing with math and science education: "Sneaker Geometry" (Jack George), "Fairs with a Flair" (Diane McCarty), "Generating Excitement with Math Projects" (Jeffrey Kostecky and Louis Roe), "Playing with Numbers" (Diana Smith), "When Student Teachers Want to Do Hands-On Science" (Betsy Feldkamp-Price), and "Science ala Carte"…

  19. Childcare Quality and Preschoolers' Math Development

    ERIC Educational Resources Information Center

    Choi, Ji Young; Dobbs-Oates, Jennifer

    2014-01-01

    This study examined the associations between four types of childcare quality (i.e. teacher-child closeness, frequency of math-related activities, and teacher education and experience) and preschoolers' residualised gain in math over the course of six months. Additionally, potential interactions between teacher-child closeness and other indicators…

  20. Five Keys for Teaching Mental Math

    ERIC Educational Resources Information Center

    Olsen, James R.

    2015-01-01

    After studying the Common Core State Standards for Mathematics (CCSSM) and brain-based learning research, James Olsen believes mental math instruction in secondary school mathematics (grades 7-12) and in teacher education programs needs increased attention. The purpose of this article is to share some keys for teaching mental math. Olsen also…

  1. Football to Improve Math and Reading Performance

    ERIC Educational Resources Information Center

    Van Klaveren, Chris; De Witte, Kristof

    2015-01-01

    Schools frequently increase the instructional time to improve primary school children's math and reading skills. There is, however, little evidence that math and reading skills are effectively improved by these instruction-time increases. This study evaluates "Playing for Success" (PfS), an extended school day program for underachieving…

  2. Why the Common Core Changes Math Instruction

    ERIC Educational Resources Information Center

    Faulkner, Valerie N.

    2013-01-01

    The Common Core math standards promote several important differences in how math concepts are taught and should be talked about. These changes will make it easier for younger students to comprehend and adapt to more complex concepts in the later grades. This guide should help elementary teachers make changes and adaptations that are in line the…

  3. Math and Mind Mapping: Origami Construction

    ERIC Educational Resources Information Center

    Sze, Susan

    2005-01-01

    Students with or without disabilities often experience difficulties with abstract math concepts. This paper is intended to help solve the mystery of math concepts through origami construction, a hands-on activity. Students are involved in constructing and deconstructing concepts by folding and unfolding a piece of paper which eventually leads to a…

  4. Saxon Math. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2016

    2016-01-01

    "Saxon Math" is a core curriculum for students in grades K-12 that uses an incremental approach to instruction and assessment. This approach limits the amount of new math content delivered to students each day and allows time for daily practice. New concepts are introduced gradually and integrated with previously introduced content so…

  5. Gameplaying for Maths Learning: Cooperative or Not?

    ERIC Educational Resources Information Center

    Ke, Fengfeng; Grabowski, Barbara

    2007-01-01

    This study investigated the effects of gameplaying on fifth-graders' maths performance and attitudes. One hundred twenty five fifth graders were recruited and assigned to a cooperative Teams-Games-Tournament (TGT), interpersonal competitive or no gameplaying condition. A state standards-based maths exam and an inventory on attitudes towards maths…

  6. Saxon Math. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2013

    2013-01-01

    "Saxon Math", published by Houghton Mifflin Harcourt, is a core curriculum for students in grades K-12. This report includes studies that investigate the potential impact of "Saxon Math" for students in grades 6-8. A distinguishing feature of the curriculum is its use of an incremental approach for instruction and assessment.…

  7. Saxon Math. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2013

    2013-01-01

    "Saxon Math," published by Houghton Mifflin Harcourt, is a core curriculum for students in grades K-5. A distinguishing feature of the curriculum is its use of an incremental approach for instruction and assessment. This approach limits the amount of new math content delivered to students each day and allows time for daily practice. New…

  8. Methods and Strategies: Math and Science Night

    ERIC Educational Resources Information Center

    Sullivan, Joan; Hatton, Mary

    2011-01-01

    Family Math and Science Nights engage students and parents in active investigations tied to the curriculum in a fun, informal environment. Through this program, families actively explore math and science ideas, discover together through guided inquiry, and apply their discoveries to solve a problem at the end. All activities are hands-on, use…

  9. Adaptively Ubiquitous Learning in Campus Math Path

    ERIC Educational Resources Information Center

    Shih, Shu-Chuan; Kuo, Bor-Chen; Liu, Yu-Lung

    2012-01-01

    The purposes of this study are to develop and evaluate the instructional model and learning system which integrate ubiquitous learning, computerized adaptive diagnostic testing system and campus math path learning. The researcher first creates a ubiquitous learning environment which is called "adaptive U-learning math path system". This…

  10. Explaining Math Achievement: Personality, Motivation, and Trust

    ERIC Educational Resources Information Center

    Kilic-Bebek, Ebru

    2009-01-01

    This study investigated the statistical significance of student trust next to the well-tested constructs of personality and motivation to determine whether trust is a significant predictor of course achievement in college math courses. Participants were 175 students who were taking undergraduate math courses in an urban public university. The…

  11. Math and Science Education. IDRA Focus.

    ERIC Educational Resources Information Center

    IDRA Newsletter, 1996

    1996-01-01

    This newsletter focuses on efforts to make math and science more attractive, relevant, and accessible to students, especially limited-English-proficient, minority, economically disadvantaged, female, and at-risk students. "TAAS Math Performance" (Linda Cantu) outlines recent statewide results for the controversial Texas Assessment of…

  12. Saxon Math. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2011

    2011-01-01

    "Saxon Math" is a textbook series covering grades K-12 based on incremental development and continual review of mathematical concepts to give students time to learn and practice concepts throughout the year. A distinguishing feature of "Saxon Math" is its use of a distributed approach--spreading practice and instruction for any…

  13. Math Wars 2: It's the Teaching, Stupid!

    ERIC Educational Resources Information Center

    Marshall, John

    2006-01-01

    In math classes, teachers often focus instruction on the formulas and processes needed to solve different types of problems, but neglect to teach the concepts on which these tools are based. In this article, the author argues that before they can do this, teachers themselves need to understand "understanding math." Teaching mathematics with…

  14. Making the Math/Science Connection.

    ERIC Educational Resources Information Center

    Sherman, Laurel Galbraith

    1989-01-01

    Suggestions are made for activities that combine the teaching of math and science. Math concepts include: graphing, estimating, measurement, statistics, geometry, and logic. Science topics include: plant reproduction, solar system, forces, longitude and latitude, Earth's magnetic field, nutrition, and heat. (IAH)

  15. Math & the Dyslexic: Making the Abstract Concrete.

    ERIC Educational Resources Information Center

    Kitzen, Kay

    1983-01-01

    Math historian Morris Kline suggests that math instruction should be made concrete and that teachers should not turn kids off by making intuitively understood concepts complex through the use of fancy language. He advocates using pictorial representations and examples of actual physical occurrences. The dyslexic student has special difficulties in…

  16. Soundoff: My Anxieties about Math Anxiety.

    ERIC Educational Resources Information Center

    Greenwood, Jay

    1984-01-01

    Math anxiety affects both sexes, and is not the cause of imbalance in mathematical professions. Attempts to broaden perceptions of mathematics deal only with the symptoms of math anxiety. The principal cause is the methodology used to teach mathematics. Problem-solving processes must be employed. (MNS)

  17. Cardboard Boat Building in Math Class

    ERIC Educational Resources Information Center

    Omundsen, John

    2014-01-01

    If you want to get the attention of a group of eighth grade math students, tell them they are going to build a life-size cardboard boat. To increase interest, follow up this statement by telling them that two to four of them will actually be rowing this boat across a small pond. Eighth grade math students at Oasis Charter Middle School in…

  18. Saxon Math. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2004

    2004-01-01

    "Saxon Math" focuses on fundamental mathematics skills, targeting children from kindergarten through grade 12. This report focuses on middle school math, defined as grades 6 through 9. The 6th grade curriculum covers simplifying expressions containing parentheses, graphing functions, and understanding ratios and proportions. The 7th grade…

  19. Reading Coaching for Math Word Problems

    ERIC Educational Resources Information Center

    Edwards, Sharon A.; Maloy, Robert W.; Anderson, Gordon

    2009-01-01

    "Math is language, too," Phyllis and David Whitin (2000) remind everyone in their informative book about reading and writing in the mathematics classroom. This means that students in elementary school math classes are learning two distinct, yet related languages--one of numbers, the other of words. These languages of numbers and words…

  20. Using Concurrent Verbalization to Measure Math Comprehension

    ERIC Educational Resources Information Center

    Lambeth, Cathryn Colley

    2012-01-01

    The current study investigated variability in student performance on a concurrent verbalization measure based on a grade-level sample math word problem and sought to determine to what extent the variability in verbalization scores is related to scores on a reliable measure of reading (DIBELS Next) and math (easyCBM) and to student factors (e.g.…

  1. Selective desulfurization of cysteine in the presence of Cys(Acm) in polypeptides obtained by native chemical ligation.

    PubMed

    Pentelute, Brad L; Kent, Stephen B H

    2007-02-15

    Increased versatility for the synthesis of proteins and peptides by native chemical ligation requires the ability to ligate at positions other than Cys. Here, we report that Raney nickel can be used under standard conditions for the selective desulfurization of Cys in the presence of Cys(Acm). This simple and practical tactic enables the more common Xaa-Ala junctions to be used as ligation sites for the chemical synthesis of Cys-containing peptides and proteins. [reaction: see text].

  2. Geologic, geotechnical, and geophysical properties of core from the Acme Fire-Pit-1 drill hole, Sheridan County, Wyoming

    USGS Publications Warehouse

    Collins, Donley S.

    1983-01-01

    A preliminary core study from the Acme Fire-Pit-1 drill hole, Sheridan County, Wyoming, revealed that the upper portion of the core had been baked by a fire confined to the underlying Monarch coal bed. The baked (clinkered) sediment above the Monarch coal bed was determined to have higher point-load strength values (greater than 2 MPa) than the sediment under the burned coal

  3. Segmentation of solid subregion of high grade gliomas in MRI images based on active contour model (ACM)

    NASA Astrophysics Data System (ADS)

    Seow, P.; Win, M. T.; Wong, J. H. D.; Abdullah, N. A.; Ramli, N.

    2016-03-01

    Gliomas are tumours arising from the interstitial tissue of the brain which are heterogeneous, infiltrative and possess ill-defined borders. Tumour subregions (e.g. solid enhancing part, edema and necrosis) are often used for tumour characterisation. Tumour demarcation into substructures facilitates glioma staging and provides essential information. Manual segmentation had several drawbacks that include laborious, time consuming, subjected to intra and inter-rater variability and hindered by diversity in the appearance of tumour tissues. In this work, active contour model (ACM) was used to segment the solid enhancing subregion of the tumour. 2D brain image acquisition data using 3T MRI fast spoiled gradient echo sequence in post gadolinium of four histologically proven high-grade glioma patients were obtained. Preprocessing of the images which includes subtraction and skull stripping were performed and then followed by ACM segmentation. The results of the automatic segmentation method were compared against the manual delineation of the tumour by a trainee radiologist. Both results were further validated by an experienced neuroradiologist and a brief quantitative evaluations (pixel area and difference ratio) were performed. Preliminary results of the clinical data showed the potential of ACM model in the application of fast and large scale tumour segmentation in medical imaging.

  4. Math Exchanges: Guiding Young Mathematicians in Small-Group Meetings

    ERIC Educational Resources Information Center

    Wedekind, Kassia Omohundro

    2011-01-01

    Traditionally, small-group math instruction has been used as a format for reaching children who struggle to understand. Math coach Kassia Omohundro Wedekind uses small-group instruction as the centerpiece of her math workshop approach, engaging all students in rigorous "math exchanges." The key characteristics of these mathematical conversations…

  5. What to Look for in Your Math Classrooms

    ERIC Educational Resources Information Center

    Nelson, Barbara Scott; Sassi, Annette

    2006-01-01

    Principals need to get away from traditional beliefs that equate math success solely with rote knowledge of math facts and the ability to calculate. Today, math instruction also is being directed to student understanding of essential concepts. Principals must learn what to look for when they visit math classrooms to make sure it is being taught…

  6. Math at Work: Using Numbers on the Job

    ERIC Educational Resources Information Center

    Torpey, Elka

    2012-01-01

    Math is used in many occupations. And, experts say, workers with a strong background in mathematics are increasingly in demand. That equals prime opportunity for career-minded math enthusiasts. This article describes how math factors into careers. The first section talks about some of the ways workers use math in the workplace. The second section…

  7. Math Intervention Teachers' Pedagogical Content Knowledge and Student Achievement

    ERIC Educational Resources Information Center

    Waller, Lisa Ivey

    2012-01-01

    This research investigated the relationship of math intervention teachers' (MITs) pedagogical content knowledge (PCK) and students' math achievement gains in primary math interventions. The Kentucky Center for Mathematics gathered data on the MITs and primary math intervention students included in this study. Longitudinal data were analyzed for a…

  8. Math-Gender Stereotypes in Elementary School Children

    ERIC Educational Resources Information Center

    Cvencek, Dario; Meltzoff, Andrew N.; Greenwald, Anthony G.

    2011-01-01

    A total of 247 American children between 6 and 10 years of age (126 girls and 121 boys) completed Implicit Association Tests and explicit self-report measures assessing the association of (a) "me" with "male" (gender identity), (b) "male" with "math" (math-gender stereotype), and (c) "me" with "math" (math self-concept). Two findings emerged.…

  9. Radical Math: Creating Balance in an Unjust World, Conference Report

    ERIC Educational Resources Information Center

    Davidson, Jill

    2007-01-01

    Founded in 2006 by Jonathan Osler, Math and Community Organizing teacher at El Puente Academy for Peace and Justice, a public CES high school in Brooklyn, New York, Radical Math is an organization for educators working to integrate issues of political, economic, and social justice into math education. In April 2007, Radical Math cosponsored…

  10. The neurodevelopmental basis of math anxiety.

    PubMed

    Young, Christina B; Wu, Sarah S; Menon, Vinod

    2012-05-01

    Math anxiety is a negative emotional reaction to situations involving mathematical problem solving. Math anxiety has a detrimental impact on an individual's long-term professional success, but its neurodevelopmental origins are unknown. In a functional MRI study on 7- to 9-year-old children, we showed that math anxiety was associated with hyperactivity in right amygdala regions that are important for processing negative emotions. In addition, we found that math anxiety was associated with reduced activity in posterior parietal and dorsolateral prefrontal cortex regions involved in mathematical reasoning. Multivariate classification analysis revealed distinct multivoxel activity patterns, which were independent of overall activation levels in the right amygdala. Furthermore, effective connectivity between the amygdala and ventromedial prefrontal cortex regions that regulate negative emotions was elevated in children with math anxiety. These effects were specific to math anxiety and unrelated to general anxiety, intelligence, working memory, or reading ability. Our study identified the neural correlates of math anxiety for the first time, and our findings have significant implications for its early identification and treatment.

  11. An Investigation of Boys' and Girls' Emotional Experience of Math, Their Math Performance, and the Relation between These Variables

    ERIC Educational Resources Information Center

    Erturan, Selin; Jansen, Brenda

    2015-01-01

    Gender differences in children's emotional experience of math, their math performance, and the relation between these variables were investigated in two studies. In Study 1, test anxiety, math anxiety, and math performance (whole-number computation) were measured in 134 children in grades 3-8 (ages 7-15 years). In Study 2, perceived math…

  12. Math Practice and Its Influence on Math Skills and Executive Functions in Adolescents with Mild to Borderline Intellectual Disability

    ERIC Educational Resources Information Center

    Jansen, Brenda R. J.; De Lange, Eva; Van der Molen, Mariet J.

    2013-01-01

    Adolescents with mild to borderline intellectual disability (MBID) often complete schooling without mastering basic math skills, even though basic math is essential for math-related challenges in everyday life. Limited attention to cognitive skills and low executive functioning (EF) may cause this delay. We aimed to improve math skills in an…

  13. A Prediction of the Damping Properties of Hindered Phenol AO-60/polyacrylate Rubber (AO-60/ACM) Composites through Molecular Dynamics Simulation

    NASA Astrophysics Data System (ADS)

    Yang, Da-Wei; Zhao, Xiu-Ying; Zhang, Geng; Li, Qiang-Guo; Wu, Si-Zhu

    2016-05-01

    Molecule dynamics (MD) simulation, a molecular-level method, was applied to predict the damping properties of AO-60/polyacrylate rubber (AO-60/ACM) composites before experimental measures were performed. MD simulation results revealed that two types of hydrogen bond, namely, type A (AO-60) -OH•••O=C- (ACM), type B (AO-60) - OH•••O=C- (AO-60) were formed. Then, the AO-60/ACM composites were fabricated and tested to verify the accuracy of the MD simulation through dynamic mechanical thermal analysis (DMTA). DMTA results showed that the introduction of AO-60 could remarkably improve the damping properties of the composites, including the increase of glass transition temperature (Tg) alongside with the loss factor (tan δ), also indicating the AO-60/ACM(98/100) had the best damping performance amongst the composites which verified by the experimental.

  14. A functional collagen adhesin gene, acm, in clinical isolates of Enterococcus faecium correlates with the recent success of this emerging nosocomial pathogen.

    PubMed

    Nallapareddy, Sreedhar R; Singh, Kavindra V; Okhuysen, Pablo C; Murray, Barbara E

    2008-09-01

    Enterococcus faecium recently evolved from a generally avirulent commensal into a multidrug-resistant health care-associated pathogen causing difficult-to-treat infections, but little is known about the factors responsible for this change. We previously showed that some E. faecium strains express a cell wall-anchored collagen adhesin, Acm. Here we analyzed 90 E. faecium isolates (99% acm(+)) and found that the Acm protein was detected predominantly in clinically derived isolates, while the acm gene was present as a transposon-interrupted pseudogene in 12 of 47 isolates of nonclinical origin. A highly significant association between clinical (versus fecal or food) origin and collagen adherence (P Acm detected by whole-cell enzyme-linked immunosorbent assay and flow cytometry. Thirty-seven of 41 sera from patients with E. faecium infections showed reactivity with recombinant Acm, while only 4 of 30 community and hospitalized patient control group sera reacted (P Acm were present in all 14 E. faecium endocarditis patient sera. Although pulsed-field gel electrophoresis indicated that multiple strains expressed collagen adherence, multilocus sequence typing demonstrated that the majority of collagen-adhering isolates, as well as 16 of 17 endocarditis isolates, are part of the hospital-associated E. faecium genogroup referred to as clonal complex 17 (CC17), which has emerged globally. Taken together, our findings support the hypothesis that Acm has contributed to the emergence of E. faecium and CC17 in nosocomial infections.

  15. Math: The Gateway to Great Careers

    NASA Technical Reports Server (NTRS)

    Ploutz-Snyder, Robert

    2010-01-01

    This slide presentation examines the role of mathematical proficiency and how it relates to advantages in careers. It emphasises the role of math in attaining entrance to college, graduate schools, and a career that is interesting and well paying.

  16. Understanding the Home Math Environment and Its Role in Predicting Parent Report of Children’s Math Skills

    PubMed Central

    Ganley, Colleen M.; Purpura, David J.

    2016-01-01

    There is a growing literature concerning the role of the home math environment in children’s math development. In this study, we examined the relation between these constructs by specifically addressing three goals. The first goal was to identify the measurement structure of the home math environment through a series of confirmatory factor analyses. The second goal was to examine the role of the home math environment in predicting parent report of children’s math skills. The third goal was to test a series of potential alternative explanations for the relation between the home math environment and parent report of children’s skills, specifically the direct and indirect role of household income, parent math anxiety, and parent math ability as measured by their approximate number system performance. A final sample of 339 parents of children aged 3 through 8 drawn from Mechanical Turk answered a questionnaire online. The best fitting model of the home math environment was a bifactor model with a general factor representing the general home math environment, and three specific factors representing the direct numeracy environment, the indirect numeracy environment, and the spatial environment. When examining the association of the home math environment factors to parent report of child skills, the general home math environment factor and the spatial environment were the only significant predictors. Parents who reported doing more general math activities in the home reported having children with higher math skills, whereas parents who reported doing more spatial activities reported having children with lower math skills. PMID:28005925

  17. Math-gender stereotypes in elementary school children.

    PubMed

    Cvencek, Dario; Meltzoff, Andrew N; Greenwald, Anthony G

    2011-01-01

    A total of 247 American children between 6 and 10 years of age (126 girls and 121 boys) completed Implicit Association Tests and explicit self-report measures assessing the association of (a) me with male (gender identity), (b) male with math (math-gender stereotype), and (c) me with math (math self-concept). Two findings emerged. First, as early as second grade, the children demonstrated the American cultural stereotype that math is for boys on both implicit and explicit measures. Second, elementary school boys identified with math more strongly than did girls on both implicit and self-report measures. The findings suggest that the math-gender stereotype is acquired early and influences emerging math self-concepts prior to ages at which there are actual differences in math achievement.

  18. Cognitive consistency and math-gender stereotypes in Singaporean children.

    PubMed

    Cvencek, Dario; Meltzoff, Andrew N; Kapur, Manu

    2014-01-01

    In social psychology, cognitive consistency is a powerful principle for organizing psychological concepts. There have been few tests of cognitive consistency in children and no research about cognitive consistency in children from Asian cultures, who pose an interesting developmental case. A sample of 172 Singaporean elementary school children completed implicit and explicit measures of math-gender stereotype (male=math), gender identity (me=male), and math self-concept (me=math). Results showed strong evidence for cognitive consistency; the strength of children's math-gender stereotypes, together with their gender identity, significantly predicted their math self-concepts. Cognitive consistency may be culturally universal and a key mechanism for developmental change in social cognition. We also discovered that Singaporean children's math-gender stereotypes increased as a function of age and that boys identified with math more strongly than did girls despite Singaporean girls' excelling in math. The results reveal both cultural universals and cultural variation in developing social cognition.

  19. On the Leaky Math Pipeline: Comparing Implicit Math-Gender Stereotypes and Math Withdrawal in Female and Male Children and Adolescents

    ERIC Educational Resources Information Center

    Steffens, Melanie C.; Jelenec, Petra; Noack, Peter

    2010-01-01

    Many models assume that habitual human behavior is guided by spontaneous, automatic, or implicit processes rather than by deliberate, rule-based, or explicit processes. Thus, math-ability self-concepts and math performance could be related to implicit math-gender stereotypes in addition to explicit stereotypes. Two studies assessed at what age…

  20. Math and Movement: Practical Ways to Incorporate Math into Physical Education

    ERIC Educational Resources Information Center

    Wade, Marcia

    2016-01-01

    Each year, physical educators are asked to incorporate even more math, language arts, science and social studies into their curriculum. The challenge is how to do this without sacrificing the essential health and life skills provided by a quality physical education program. One program, Math & Movement, is a great aid for physical educators to…

  1. The Effects of the Elevate Math Summer Program on Math Achievement and Algebra Readiness

    ERIC Educational Resources Information Center

    Snipes, Jason; Huang, Chun-Wei; Jaquet, Karina; Finkelstein, Neal

    2016-01-01

    To raise math success rates in middle school, many schools and districts have implemented summer math programs designed to improve student preparation for algebra content in grade 8. However, little is known about the effectiveness of these programs. While students who participate typically experience learning gains, there is little rigorous…

  2. Gender Compatibility, Math-Gender Stereotypes, and Self-Concepts in Math and Physics

    ERIC Educational Resources Information Center

    Koul, Ravinder; Lerdpornkulrat, Thanita; Poondej, Chanut

    2016-01-01

    Positive self-assessment of ability in the quantitative domains is considered critical for student participation in science, technology, engineering, and mathematics field studies. The present study investigated associations of gender compatibility (gender typicality and contentedness) and math-gender stereotypes with self-concepts in math and…

  3. Maternal Math Talk in the Home and Math Skills in Preschool Children

    ERIC Educational Resources Information Center

    Susperreguy, Maria Ines; Davis-Kean, Pamela E.

    2016-01-01

    Research Findings: The current study analyzed the relation between the amount of mathematical input that preschool children hear (i.e., math talk) from their mothers in their homes and their early math ability a year later. Forty mother-child dyads recorded their naturalistic exchanges in their homes using an enhanced audio-recording device (the…

  4. Investigating Validity of Math 105 as Prerequisite to Math 201 among Undergraduate Students, Nigeria

    ERIC Educational Resources Information Center

    Zakariya, Yusuf F.

    2016-01-01

    In this study, the author examined the validity of MATH 105 as a prerequisite to MATH 201. The data for this study was extracted directly from the examination results logic of the university. Descriptive statistics in form of correlations and linear regressions were used to analyze the obtained data. Three research questions were formulated and…

  5. Math Is Like a Scary Movie? Helping Young People Overcome Math Anxiety

    ERIC Educational Resources Information Center

    Kulkin, Margaret

    2016-01-01

    Afterschool teachers who tutor students or provide homework help have a unique opportunity to help students overcome the social or emotional barriers that so often block learning. They can embrace a creative and investigative approach to math learning. Margaret Kulkin's interest in being a math attitude "myth-buster" led her to apply to…

  6. Teaching Basic Math Skills to Preschoolers Using "Connecting Math Concepts Level K"

    ERIC Educational Resources Information Center

    McKenzie, Michelle A.; Marchand-Martella, Nancy E.; Moore, Marion E.; Martella, Ronald C.

    2004-01-01

    This study investigated the effects of teaching basic math skills to 16 children (11 typically developing, 5 with developmental delays) in an integrated university preschool. "Connecting Math Concepts Level K (CMC--K"; Engelmann & Becker, 1995) was delivered by the classroom teacher to small groups of 4 to 6 children over 6.5 weeks.…

  7. Building Math Fluency for Students with Developmental Disabilities and Attentional Difficulties Using "Great Leaps Math"

    ERIC Educational Resources Information Center

    Jolivette, Kristine; Lingo, Amy S.; Houchins, David E.; Barton-Arwood, Sally M.; Shippen, Margaret E.

    2006-01-01

    The effects of a fluency building math program on addition and subtraction computational skills were evaluated using a multiple probe across subjects design. Two students with developmental disabilities and one student with attentional difficulties participated in a supplemental intervention using the Great Leaps Math program. Analyses indicated…

  8. Evaluation of the MIND Research Institute's Spatial-Temporal Math (ST Math) Program in California

    ERIC Educational Resources Information Center

    Wendt, Staci; Rice, John; Nakamoto, Jonathan

    2014-01-01

    The MIND Research Institute contracted with the Evaluation Research Program at WestEd to conduct an independent assessment of mathematics outcomes in elementary school grades across California that were provided with the ST Math program. Spatial-Temporal (ST) Math is a game-based instructional software designed to boost K-5 and secondary-level…

  9. STEM Educator Pipeline: Doing the Math on Recruiting Math and Science Teachers. Issue Brief

    ERIC Educational Resources Information Center

    ACT, Inc., 2013

    2013-01-01

    The proposed federal STEM Teacher Pathway program seeks to produce 100,000 new, high-quality math and science teachers in the next decade. How difficult will the goal be to achieve? This report uses data from the ACT® college readiness assessment to examine the feasibility of producing 100,000 high-quality math and science teachers in the next…

  10. Math Strategies You Can Count On: Tools & Activities to Build Math Appreciation, Understanding & Skills

    ERIC Educational Resources Information Center

    Forsten, Char

    2005-01-01

    This book offers classroom-tested activities designed to make even the most reluctant learners crazy about math. Appealing to everyone from sports fans to readers, future fashion designers to budding musicians, the activities presented in this book offer ways to develop a deep-rooted love and appreciation of math in every student. Teachers are…

  11. Math Tracks: What Pace in Math Is Best for the Middle School Child?

    ERIC Educational Resources Information Center

    Morrison, Michelle

    2011-01-01

    Mathematics is a critical part of academic preparation of the middle school child, or, as Dr. Maria Montessori would refer to them, children in the third plane of development. Montessori educators are sincere in their endeavors not only to prepare young students for further studies of math and the application of math in their world and careers,…

  12. Longitudinal Pathways from Math Intrinsic Motivation and Achievement to Math Course Accomplishments and Educational Attainment

    ERIC Educational Resources Information Center

    Gottfried, Adele Eskeles; Marcoulides, George A.; Gottfried, Allen W.; Oliver, Pamella H.

    2013-01-01

    Across 20 years, pathways from math intrinsic motivation and achievement (ages 9-17) to high school math course accomplishments and educational attainment (age 29) were analyzed. Academic intrinsic motivation was the theoretical foundation. To determine how initial status and change in motivation and achievement related to course accomplishments…

  13. Gender compatibility, math-gender stereotypes, and self-concepts in math and physics

    NASA Astrophysics Data System (ADS)

    Koul, Ravinder; Lerdpornkulrat, Thanita; Poondej, Chanut

    2016-12-01

    [This paper is part of the Focused Collection on Gender in Physics.] Positive self-assessment of ability in the quantitative domains is considered critical for student participation in science, technology, engineering, and mathematics field studies. The present study investigated associations of gender compatibility (gender typicality and contentedness) and math-gender stereotypes with self-concepts in math and physics. Statistical analysis of survey data was based on a sample of 170 male and female high school science students matched on propensity scores based on age and past GPA scores in math. Results of MANCOVA analyses indicated that the combination of high personal gender compatibility with low endorsement of math-gender stereotypes was associated with low gender differentials in math and physics self-concepts whereas the combination of high personal gender compatibility with high endorsement of math-gender stereotypes was associated with high gender differentials in math and physics self-concepts. These results contribute to the recent theoretical and empirical work on antecedents to the math and physics identities critical to achieving gender equity in STEM fields.

  14. Literacy Specialists in Math Class! Closing the Achievement Gap on State Math Assessments

    ERIC Educational Resources Information Center

    DiGisi, Lori L.; Fleming, Dianne

    2005-01-01

    Sixth and eighth grade students who are English language learners must be able to read and interpret 39 math word problems in order to successfully calculate the answers on the Massachusetts state math assessment (MCAS). The first year that MCAS was administered, many ELL students read the questions, found them confusing, and left them blank,…

  15. A Comparative Study of Integrating Multimedia into the Third Grade Math Curriculum to Improve Math Learning

    ERIC Educational Resources Information Center

    Liu, Yuliang

    2013-01-01

    This quasi-experimental study was to design, develop, and implement one multimedia math lesson in third grade to improve students' math learning. The non-equivalent control group design was used. The experimental group had 11 third grade students and the control group had 15 third grade students in an African American predominated elementary…

  16. The Aftermath of Remedial Math: Investigating the Low Rate of Certificate Completion among Remedial Math Students

    ERIC Educational Resources Information Center

    Bahr, Peter Riley

    2013-01-01

    Nationally, a majority of community college students require remedial assistance with mathematics, but comparatively few students who begin the remedial math sequence ultimately complete it and achieve college-level math competency. The academic outcomes of students who begin the sequence but do not complete it are disproportionately unfavorable:…

  17. Math Anxiety and the "Math Gap": How Attitudes toward Mathematics Disadvantages Students as Early as Preschool

    ERIC Educational Resources Information Center

    Geist, Eugene

    2015-01-01

    This study was conducted to examine the attitudes of Head Start teachers toward mathematics and how it may influence how and what they teach in the classroom. In general, the findings of this study can be summarized as this: 1) Math anxiety affects how teachers assess their ability at mathematics. The more math anxiety they report, the lower they…

  18. Math fluency is etiologically distinct from untimed math performance, decoding fluency, and untimed reading performance: evidence from a twin study.

    PubMed

    Petrill, Stephen; Logan, Jessica; Hart, Sara; Vincent, Pamela; Thompson, Lee; Kovas, Yulia; Plomin, Robert

    2012-01-01

    The authors examined whether math fluency was independent from untimed math and from reading using 314 pairs of school-aged twins drawn from the Western Reserve Reading and Math Projects. Twins were assessed through a 90-min home visit at approximately age 10 and were reassessed in their homes approximately 1 year later. Results suggested that the shared environment and genetics influenced the covariance among math fluency, untimed math measures, and reading measures. However, roughly two thirds of the variance in math fluency was independent from untimed math measures and reading, including reading fluency. The majority of this independent variance was the result of genetic factors that were longitudinally stable across two measurement occasions. These results suggest that math fluency, although related to other math measures, may also be a genetically distinct dimension of mathematics performance.

  19. trans-1,2-Dichloroethylene

    Integrated Risk Information System (IRIS)

    trans - 1,2 - Dichloroethylene ; CASRN 156 - 60 - 5 Human health assessment information on a chemical substance is included in the IRIS database only after a comprehensive review of toxicity data , as outlined in the IRIS assessment development process . Sections I ( Health Hazard Assessments for No

  20. Improving Student Achievement in Math and Science

    NASA Technical Reports Server (NTRS)

    Sullivan, Nancy G.; Hamsa, Irene Schulz; Heath, Panagiota; Perry, Robert; White, Stacy J.

    1998-01-01

    As the new millennium approaches, a long anticipated reckoning for the education system of the United States is forthcoming, Years of school reform initiatives have not yielded the anticipated results. A particularly perplexing problem involves the lack of significant improvement of student achievement in math and science. Three "Partnership" projects represent collaborative efforts between Xavier University (XU) of Louisiana, Southern University of New Orleans (SUNO), Mississippi Valley State University (MVSU), and the National Aeronautics and Space Administration (NASA), Stennis Space Center (SSC), to enhance student achievement in math and science. These "Partnerships" are focused on students and teachers in federally designated rural and urban empowerment zones and enterprise communities. The major goals of the "Partnerships" include: (1) The identification and dissemination of key indices of success that account for high performance in math and science; (2) The education of pre-service and in-service secondary teachers in knowledge, skills, and competencies that enhance the instruction of high school math and science; (3) The development of faculty to enhance the quality of math and science courses in institutions of higher education; and (4) The incorporation of technology-based instruction in institutions of higher education. These goals will be achieved by the accomplishment of the following objectives: (1) Delineate significant ?best practices? that are responsible for enhancing student outcomes in math and science; (2) Recruit and retain pre-service teachers with undergraduate degrees in Biology, Math, Chemistry, or Physics in a graduate program, culminating with a Master of Arts in Curriculum and Instruction; (3) Provide faculty workshops and opportunities for travel to professional meetings for dissemination of NASA resources information; (4) Implement methodologies and assessment procedures utilizing performance-based applications of higher order

  1. The role of expressive writing in math anxiety.

    PubMed

    Park, Daeun; Ramirez, Gerardo; Beilock, Sian L

    2014-06-01

    Math anxiety is a negative affective reaction to situations involving math. Previous work demonstrates that math anxiety can negatively impact math problem solving by creating performance-related worries that disrupt the working memory needed for the task at hand. By leveraging knowledge about the mechanism underlying the math anxiety-performance relationship, we tested the effectiveness of a short expressive writing intervention that has been shown to reduce intrusive thoughts and improve working memory availability. Students (N = 80) varying in math anxiety were asked to sit quietly (control group) prior to completing difficulty-matched math and word problems or to write about their thoughts and feelings regarding the exam they were about to take (expressive writing group). For the control group, high math-anxious individuals (HMAs) performed significantly worse on the math problems than low math-anxious students (LMAs). In the expressive writing group, however, this difference in math performance across HMAs and LMAs was significantly reduced. Among HMAs, the use of words related to anxiety, cause, and insight in their writing was positively related to math performance. Expressive writing boosts the performance of anxious students in math-testing situations.

  2. Superfund Record of Decision (EPA Region 5): Acme Solvent Reclaiming, Winnebago County, IL. (Second remedial action), December 1990

    SciTech Connect

    Not Available

    1990-12-31

    The 20-acre Acme Solvent Reclaiming site is a former industrial disposal site in Winnebago County, Illinois. Land use in the area is mixed agricultural and residential. From 1960 to 1973, Acme Solvent Reclaiming disposed of paints, oils, and still bottoms onsite from its solvent reclamation plant. Wastes were dumped into depressions created from previous quarrying and landscaping operations, and empty drums also were stored onsite. State investigations in 1981 identified elevated levels of chlorinated organic compounds in ground water. A 1985 Record of Decision (ROD) provided for excavation and onsite incineration of 26,000 cubic yards of contaminated soil and sludge, supplying home carbon treatment units to affected residences, and further study of ground water and bedrock. During illegal removal actions taken by PRPs in 1986, 40,000 tons of soil and sludge were removed from the site. The selected remedial action for the site includes excavating and treating 6,000 tons of soil and sludge from two waste areas, using low-temperature thermal stripping; treating residuals using solidification, if necessary, followed by onsite or offsite disposal; treating the remaining contaminated soil and possibly bedrock using soil/bedrock vapor extraction; consolidating the remaining contaminated soil onsite with any treatment residuals, followed by capping; incinerating offsite 8,000 gallons of liquids and sludge from two remaining tanks, and disposing of the tanks offsite; providing an alternate water supply to residents with contaminated wells; pumping and onsite treatment of VOC-contaminated ground water.

  3. Insights into Degron Recognition by APC/C Coactivators from the Structure of an Acm1-Cdh1 Complex

    PubMed Central

    He, Jun; Chao, William C.H.; Zhang, Ziguo; Yang, Jing; Cronin, Nora; Barford, David

    2013-01-01

    Summary The anaphase-promoting complex/cyclosome (APC/C) regulates sister chromatid segregation and the exit from mitosis. Selection of most APC/C substrates is controlled by coactivator subunits (either Cdc20 or Cdh1) that interact with substrate destruction motifs—predominantly the destruction (D) box and KEN box degrons. How coactivators recognize D box degrons and how this is inhibited by APC/C regulatory proteins is not defined at the atomic level. Here, from the crystal structure of S. cerevisiae Cdh1 in complex with its specific inhibitor Acm1, which incorporates D and KEN box pseudosubstrate motifs, we describe the molecular basis for D box recognition. Additional interactions between Acm1 and Cdh1 identify a third protein-binding site on Cdh1 that is likely to confer coactivator-specific protein functions including substrate association. We provide a structural rationalization for D box and KEN box recognition by coactivators and demonstrate that many noncanonical APC/C degrons bind APC/C coactivators at the D box coreceptor. PMID:23707760

  4. ACM-based automatic liver segmentation from 3-D CT images by combining multiple atlases and improved mean-shift techniques.

    PubMed

    Ji, Hongwei; He, Jiangping; Yang, Xin; Deklerck, Rudi; Cornelis, Jan

    2013-05-01

    In this paper, we present an autocontext model(ACM)-based automatic liver segmentation algorithm, which combines ACM, multiatlases, and mean-shift techniques to segment liver from 3-D CT images. Our algorithm is a learning-based method and can be divided into two stages. At the first stage, i.e., the training stage, ACM is performed to learn a sequence of classifiers in each atlas space (based on each atlas and other aligned atlases). With the use of multiple atlases, multiple sequences of ACM-based classifiers are obtained. At the second stage, i.e., the segmentation stage, the test image will be segmented in each atlas space by applying each sequence of ACM-based classifiers. The final segmentation result will be obtained by fusing segmentation results from all atlas spaces via a multiclassifier fusion technique. Specially, in order to speed up segmentation, given a test image, we first use an improved mean-shift algorithm to perform over-segmentation and then implement the region-based image labeling instead of the original inefficient pixel-based image labeling. The proposed method is evaluated on the datasets of MICCAI 2007 liver segmentation challenge. The experimental results show that the average volume overlap error and the average surface distance achieved by our method are 8.3% and 1.5 m, respectively, which are comparable to the results reported in the existing state-of-the-art work on liver segmentation.

  5. Math practice and its influence on math skills and executive functions in adolescents with mild to borderline intellectual disability.

    PubMed

    Jansen, Brenda R J; De Lange, Eva; Van der Molen, Mariët J

    2013-05-01

    Adolescents with mild to borderline intellectual disability (MBID) often complete schooling without mastering basic math skills, even though basic math is essential for math-related challenges in everyday life. Limited attention to cognitive skills and low executive functioning (EF) may cause this delay. We aimed to improve math skills in an MBID-sample using computerized math training. Also, it was investigated whether EF and math performance were related and whether computerized math training had beneficial effects on EF. The sample consisted of a total of 58 adolescents (12-15 years) from special education. Participants were randomly assigned to either the experimental group or a treatment as usual (TAU) group. In the experimental condition, participants received 5 weeks of training. Math performance and EF were assessed before and after the training period. Math performance improved equally in both groups. However, frequently practicing participants improved more than participants in the control group. Visuo-spatial memory skills were positively related to addition and subtraction skills. Transfer effects from math training to EF were absent. It is concluded that math skills may increase if a reasonable effort in practicing math skills is made. The relation between visuo-spatial memory skills provides opportunities for improving math performance.

  6. Math at home adds up to achievement in school.

    PubMed

    Berkowitz, Talia; Schaeffer, Marjorie W; Maloney, Erin A; Peterson, Lori; Gregor, Courtney; Levine, Susan C; Beilock, Sian L

    2015-10-09

    With a randomized field experiment of 587 first-graders, we tested an educational intervention designed to promote interactions between children and parents relating to math. We predicted that increasing math activities at home would increase children's math achievement at school. We tested this prediction by having children engage in math story time with their parents. The intervention, short numerical story problems delivered through an iPad app, significantly increased children's math achievement across the school year compared to a reading (control) group, especially for children whose parents are habitually anxious about math. Brief, high-quality parent-child interactions about math at home help break the intergenerational cycle of low math achievement.

  7. Elementary School Math Instruction: Can Reading Specialists Assist?

    ERIC Educational Resources Information Center

    Heinrichs, Audrey S.

    1987-01-01

    Discusses the contradictions found in recommendations for direction instruction or informal math language development, and some suggestions for practical resolution of disagreements, to enable school reading specialists to provide both background and practical help to classroom instructors teaching math. (HTH)

  8. Minimum-complexity helicopter simulation math model

    NASA Technical Reports Server (NTRS)

    Heffley, Robert K.; Mnich, Marc A.

    1988-01-01

    An example of a minimal complexity simulation helicopter math model is presented. Motivating factors are the computational delays, cost, and inflexibility of the very sophisticated math models now in common use. A helicopter model form is given which addresses each of these factors and provides better engineering understanding of the specific handling qualities features which are apparent to the simulator pilot. The technical approach begins with specification of features which are to be modeled, followed by a build up of individual vehicle components and definition of equations. Model matching and estimation procedures are given which enable the modeling of specific helicopters from basic data sources such as flight manuals. Checkout procedures are given which provide for total model validation. A number of possible model extensions and refinement are discussed. Math model computer programs are defined and listed.

  9. Trans World Tidal Gravity Profile.

    DTIC Science & Technology

    1984-12-31

    America Curitiba (BraziZ) This station, situated at the Universidade Federal do Parana, in the Instituto de Ciencias Geod6sicas under Professor C...SUL COMPOSANTE VEPTICALE ERESIL 29 40 17S 53 49 22W H 700M P 2M 0 330KM DEPOTS SEDIMENTAIRES SUk BASALTE DEPT* DE INGENIERIA RURAL-UNIV. FED. DE SANTA...PRECAMBRIENIGNEISS * UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE - DEPARTAMENTO DE FISICA TRANS WORLD TIDAL GRAVITY PROFILES P. MELCHIOR CENTRO POLITECNICO

  10. The Sum of All Fears: The Effects of Math Anxiety on Math Achievement in Fifth Grade Students and the Implications for School Counselors

    ERIC Educational Resources Information Center

    Ruff, Sarah E.; Boes, Susan R.

    2014-01-01

    Low math achievement is a recurring weakness in many students. Math anxiety is a persistent and significant theme to math avoidance and low achievement. Causes for math anxiety include social, cognitive, and academic factors. Interventions to reduce math anxiety are limited as they exclude the expert skills of professional school counselors to…

  11. Studying the User Experience of a Tablet Based Math Game

    ERIC Educational Resources Information Center

    Kiili, Kristian; Ketamo, Harri; Koivisto, Antti; Finn, Enda

    2014-01-01

    This paper presents the first findings from Math Elements user experience (UX) studies. Math Elements is a game that makes the whole Finnish maths K-2 curriculum (kindergarten and primary school grades 1 and 2) available for players all over the world. The game is based on teachable agent approach, which means that in the game players can teach…

  12. Accelerated Math[TM]. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2011

    2011-01-01

    "Accelerated Math"[TM], published by Renaissance Learning, is a software tool used to customize assignments and monitor progress in math for students in grades 1-12. The "Accelerated Math"[TM] software creates individualized assignments aligned with state standards and national guidelines, scores student work, and generates…

  13. Math Anxiety and the Student of the '80's.

    ERIC Educational Resources Information Center

    Smith, Jean Burr

    As colleges take on increasing numbers of nontraditional students who have had only minimal exposure to mathematics, instructors must alleviate patterns of math anxiety and math avoidance which impede academic success, and, in a technological society, limit career opportunities. Among the obvious causes of math anxiety are: instructors' insistence…

  14. Specific Cognitive Predictors of Early Math Problem Solving

    ERIC Educational Resources Information Center

    Decker, Scott L.; Roberts, Alycia M.

    2015-01-01

    Development of early math skill depends on a prerequisite level of cognitive development. Identification of specific cognitive skills that are important for math development may not only inform instructional approaches but also inform assessment approaches to identifying children with specific learning problems in math. This study investigated the…

  15. Mathematizing: An Emergent Math Curriculum Approach for Young Children

    ERIC Educational Resources Information Center

    Rosales, Allen C.

    2015-01-01

    Based on years of research with early childhood teachers, author Allen Rosales provides an approach to create an emergent math curriculum that integrates children's interests with math concepts. The mathematizing approach is different from traditional math curriculums, as it immerses children in a process that is designed to develop their…

  16. Training for Fluency and Generalization of Math Facts Using Technology

    ERIC Educational Resources Information Center

    Musti-Rao, Shobana; Lynch, Tom Liam; Plati, Erin

    2015-01-01

    As American students struggle with basic mathematical skills, the importance of math fact fluency has gained the attention of educators and researchers. Generalization of math fact fluency is also important for the transfer of skills to other settings and formats, assisting students in the completion of more varied and complicated math tasks. This…

  17. After-School Math PLUS (ASM+) Final Evaluation Report

    ERIC Educational Resources Information Center

    Academy for Educational Development, 2007

    2007-01-01

    This report summarizes findings from the Academy for Educational Development's (AED's) evaluation of After-School Math PLUS (ASM+). This program was designed to help students find the math in everyday experiences and create awareness about the importance of math skills for future career options. The evaluation was conducted by AED's Center for…

  18. Accelerated Math[R]: Pilot Schools Report. Monograph.

    ERIC Educational Resources Information Center

    School Renaissance Inst., Inc., Madison, WI.

    Accelerated Math (AM) math management software is a task level learning information system placed in 4th-11th grade classrooms around the country. AM provides teachers with an information system that assures that students can master all math objectives and state standards from grade 3 through calculus. It eliminates teacher paperwork, improves…

  19. Chattanooga State Community College: U Do the Math Program

    ERIC Educational Resources Information Center

    EDUCAUSE, 2014

    2014-01-01

    U Do the Math provides an innovative alternative to developmental math, replacing traditional course lectures with a student-centered approach to active learning and subject mastery. Chattanooga State used its grant funding from Next Generation Learning Challenges (NGLC) to establish and scale the U Do the Math program. The community college,…

  20. An Analysis of Math Congress in an Eighth Grade Classroom

    ERIC Educational Resources Information Center

    Kotsopoulos, Donna; Lee, Joanne

    2012-01-01

    A "math congress" is a pedagogical approach in which students present their solutions from their mathematical work completed individually, in pairs, or in small groups, and share and defend their mathematical thinking. Mathematical artifacts presented during math congress remain on display as community records of practice. Math congress…

  1. Neurobiological Underpinnings of Math and Reading Learning Disabilities

    ERIC Educational Resources Information Center

    Ashkenazi, Sarit; Black, Jessica M.; Abrams, Daniel A.; Hoeft, Fumiko; Menon, Vinod

    2013-01-01

    The primary goal of this review is to highlight current research and theories describing the neurobiological basis of math (MD), reading (RD), and comorbid math and reading disability (MD+RD). We first describe the unique brain and cognitive processes involved in acquisition of math and reading skills, emphasizing similarities and differences in…

  2. Exploring Everyday Math: Ideas for Students, Teachers, and Parents

    ERIC Educational Resources Information Center

    Apelman, Maja; King, Julie

    This book focuses on everyday math and parent involvement. It is divided into three parts and contains activities that help teachers involve parents in everyday math. Part I, Getting Started, describes the organization of the book and includes a curriculum chart. Part II, Involving Parents, discusses how children learn math and strategies for…

  3. Impact of Math Snacks Games on Students' Conceptual Understanding

    ERIC Educational Resources Information Center

    Winburg, Karin; Chamberlain, Barbara; Valdez, Alfred; Trujillo, Karen; Stanford, Theodore B.

    2016-01-01

    This "Math Snacks" intervention measured 741 fifth grade students' gains in conceptual understanding of core math concepts after game-based learning activities. Teachers integrated four "Math Snacks" games and related activities into instruction on ratios, coordinate plane, number systems, fractions and decimals. Using a…

  4. Math Sense: Measurement and Data Analysis. Teacher's Resource Guide.

    ERIC Educational Resources Information Center

    Adcock, Deborah P.

    This book is a teacher's resource guide designed to help students gain the range of math skills they need to succeed in life, work, and on standardized tests; overcome math anxiety; discover math as interesting and purposeful; and develop good number sense. Topics covered in this book include measurement and data analysis such as measuring…

  5. Math Sense: Decimals, Fractions, Ratios, and Percents. Teacher's Resource Guide.

    ERIC Educational Resources Information Center

    Green, Michael

    This book is designed to help adults gain the range of math skills they need to succeed in life and work and on standardized tests, including the GED. It is expected to help students overcome math anxiety, discover math as interesting and purposeful, and develop good number sense. Lessons are organized around four strands: (1) skill lessons that…

  6. Causes and Reduction of Math Anxiety in Preservice Elementary Teachers.

    ERIC Educational Resources Information Center

    Harper, Norma Wynn; Daane, C. J.

    1998-01-01

    Analyzed math-anxiety levels among elementary preservice teachers before and after a mathematics methods course, noting factors that promoted math anxiety. Interviews and surveys indicated significant reductions in math anxiety at the end of the course. Anxiety stemmed from rigid and structured classroom instructional practices. The main factors…

  7. Strategies for Reducing Math Anxiety. Information Capsule. Volume 1102

    ERIC Educational Resources Information Center

    Blazer, Christie

    2011-01-01

    Approximately 93 percent of Americans indicate that they experience some level of math anxiety. Math anxiety is defined as negative emotions that interfere with the solving of mathematical problems. Studies have found that some students who perform poorly on math assessments actually have a full understanding of the concepts being tested; however,…

  8. Math Sense: Whole Numbers and Money. Teacher's Resource Guide.

    ERIC Educational Resources Information Center

    Phillips, Jan

    This book is a teacher's resource guide designed to help students gain the range of math skills they need to succeed in life, work, and on standardized tests; overcome math anxiety; discover math as interesting and purposeful; and develop good number sense. Topics covered in this book include whole numbers and addition, subtraction,…

  9. Math Sense: Algebra and Geometry. Teacher's Resource Guide.

    ERIC Educational Resources Information Center

    Phillips, Jan; Osmus, Kathy

    This book is a teacher's resource guide designed to help students gain the range of math skills they need to succeed in life, work, and on standardized tests; overcome math anxiety; discover math as interesting and purposeful; and develop good number sense. Topics covered in this book include algebra and geometry. Lessons are organized around four…

  10. Saxon Middle School Math. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2007

    2007-01-01

    "Saxon Math" curricula and materials are available for grades K through 12, with the content and skills designed to meet National Council of Teachers of Mathematics (NCTM) standards and various state standards. This WWC report focuses on middle school math curricula, defined as all Saxon Math curricula for grades 6 through 9. The…

  11. From Reading to Math: How Best Practices in Literacy Can Make You a Better Math Teacher, Grades K-5

    ERIC Educational Resources Information Center

    Siena, Maggie

    2009-01-01

    Are your students engaged and motivated to read and write but hesitant during math instruction? Do you want your students to be as excited about math as they are about literacy? This unique resource explores how best practices for teaching reading and writing can help you become a better math teacher. Drawing on the work of such educators as…

  12. Preparing Prekindergartners with Math Readiness Skills: The Effect of Children's Talk, Focus, and Engagement on Math Achievement

    ERIC Educational Resources Information Center

    Cummings, Tracy; Hofer, Kerry G.; Farran, Dale C.; Lipsey, Mark W.; Bilbrey, Carol; Vorhaus, Elizabeth

    2009-01-01

    The "Building Blocks PreK Math Curriculum" (Clements & Sarama, 2007) was designed to facilitate children's engagement in math and talk about math. Much research investigates the effect of curriculum on classrooms or teacher practices. This study used a mediational model to look at a curriculum's effect on children's achievement gain, operating…

  13. Opportunities for Learning Math in Elementary School: Implications for SES Disparities in Procedural and Conceptual Math Skills

    ERIC Educational Resources Information Center

    Bachman, Heather J.; Votruba-Drzal, Elizabeth; El Nokali, Nermeen E.; Castle Heatly, Melissa

    2015-01-01

    The present study examined whether multiple opportunities to learn math were associated with smaller socioeconomic status (SES) disparities in fifth-grade math achievement using data from the NICHD Study of Early Child Care and Youth Development (SECCYD; N = 1,364). High amounts of procedural math instruction were associated with higher…

  14. Order of Administration of Math and Verbal Tests: An Ecological Intervention to Reduce Stereotype Threat on Girls' Math Performance

    ERIC Educational Resources Information Center

    Smeding, Annique; Dumas, Florence; Loose, Florence; Régner, Isabelle

    2013-01-01

    In 2 field experiments, we relied on the very features of real testing situations--where both math and verbal tests are administered--to examine whether order of test administration can, by itself, create vs. alleviate stereotype threat (ST) effects on girls' math performance. We predicted that taking the math test before the verbal test would be…

  15. Math Fluency Is Etiologically Distinct from Untimed Math Performance, Decoding Fluency, and Untimed Reading Performance: Evidence from a Twin Study

    ERIC Educational Resources Information Center

    Petrill, Stephen; Logan, Jessica; Hart, Sara; Vincent, Pamela; Thompson, Lee; Kovas, Yulia; Plomin, Robert

    2012-01-01

    The authors examined whether math fluency was independent from untimed math and from reading using 314 pairs of school-aged twins drawn from the Western Reserve Reading and Math Projects. Twins were assessed through a 90-min home visit at approximately age 10 and were reassessed in their homes approximately 1 year later. Results suggested that the…

  16. "Math Talk" in Families of Preschool-Aged Children: Frequency and Relations to Children's Early Math Skills across Time

    ERIC Educational Resources Information Center

    Susperreguy Jorquera, Maria Ines

    2013-01-01

    Early math skills are the strongest predictors of later math achievement in school. This two-wave study addressed three research questions about the role of families in fostering these skills in preschool-aged children. First, how do families talk about math at home? Second, how do these conversations vary across families with different…

  17. Math Achievement in Early Adolescence: The Role of Parental Involvement, Teachers' Behavior, and Students' Motivational Beliefs about Math

    ERIC Educational Resources Information Center

    Levpuscek, Melita Puklek; Zupancic, Maja

    2009-01-01

    Contributions of parental involvement in educational pursuits as well as math teachers' classroom behavior to students' motivation and performance in math were investigated. By the end of the first school term, 365 Slovene eighth graders reported on their parents' academic involvement (pressure, support, and help) and their math teachers' behavior…

  18. Creating Problems and Their Solutions: Service-Learning through Trinity Mathematics Triathlons, Math Nights, and Math Centers

    ERIC Educational Resources Information Center

    Klanderman, David B.; Moore, Mary Webster; Maxwell, Mandi S.; Robbert, Sharon K.

    2013-01-01

    We describe several service-learning initiatives implemented by the mathematics and education departments. College students with majors and minors in math and math education have helped to design and implement math events for elementary and middle school students. Formal and informal reflections on these service-related experiences have…

  19. CLIC-ACM: generic modular rad-hard data acquisition system based on CERN GBT versatile link

    NASA Astrophysics Data System (ADS)

    Bielawski, B.; Locci, F.; Magnoni, S.

    2015-01-01

    CLIC is a world-wide collaboration to study the next ``terascale'' lepton collider, relying upon a very innovative concept of two-beam-acceleration. This accelerator, currently under study, will be composed of the subsequence of 21000 two-beam-modules. Each module requires more than 300 analogue and digital signals which need to be acquired and controlled in a synchronous way. CLIC-ACM (Acquisition and Control Module) is the 'generic' control and acquisition module developed to accommodate the controls of all these signals for various sub-systems and related specification in term of data bandwidth, triggering and timing synchronization. This paper describes the system architecture with respect to its radiation-tolerance, power consumption and scalability.

  20. Annual evaporite deposition at the acme of the Messinian salinity crisis: evidence for solar-lunar climate forcing

    NASA Astrophysics Data System (ADS)

    Manzi, Vinicio; Gennari, Rocco; Lugli, Stefano; Roveri, Marco; Scafetta, Nicola; Schreiber, B. Charlotte

    2013-04-01

    We studied two evaporite successions (one halite and the other gypsum) consisting of annual varves in order to reconstruct the paleoclimatic and paleoenvironmental conditions existing during the acme of the Messinian salinity crisis (MSC; ≈5.5 Ma), when huge volumes of evaporites accumulated on the floor of the Mediterranean basin. The spectral analyses of these varved evaporitic successions reveal significant peaks in periodicity at around 3-5, 9, 11-13, 20-27 and 50-100 yr. The deposition of varved sedimentary deposits is usually controlled by climate conditions. A comparison with modern precipitation data in the western Mediterranean shows that during the acme of the MSC the climate was not in a permanent evaporitic stage, but in a dynamic state where evaporite deposition was controlled by quasi-periodic climate oscillations similar to modern analogs including Quasi-Biennial Oscillation, El Niño Southern Oscillation, and decadal to secular lunar- and solar-induced cycles. Particularly, we found a significant quasi-decadal oscillation with a prominent 9-year peak that is also common in modern temperature records and is present in both the contemporary Atlantic Multidecadal Oscillation (AMO) index and Pacific Decadal Oscillation (PDO) index. These cyclical patterns are common to both ancient and modern climate records because they can be associated with solar and solar-lunar tidal cycles. During the Messinian, the Mediterranean basin as well as the global ocean, were characterized by somewhat different continent distribution, ocean size, geography, hydrological connections, and ice-sheet volume with respect to the modern configuration. The recognition of modern-style climate oscillations during the Messinian, however, suggests that, although local geographic factors acted as pre-conditioning factors turning the Mediterranean Sea into a giant brine pool, external climate forcing, regulated by solar-lunar cycles and largely independent of those local geographic

  1. Stepping Up to Science and Math

    ERIC Educational Resources Information Center

    Goldston, Dee

    2004-01-01

    "Stepping Up to Science and Math" invites teachers to step back and rethink the way they teach both of these essential subjects. Then it illustrates how teachers can step up the pace with Standards-based activities that make learning more effective and efficient. (New lessons featuring gummy worms, school buses, or the planet Mars help teachers…

  2. Math, Science, and the Gifted Student.

    ERIC Educational Resources Information Center

    Sayler, Michael, Ed.

    1996-01-01

    This theme issue of a Texas journal on gifted education contains articles focusing on math and science instruction for gifted students. "Science Education for Gifted Students" (Joyce VanTassel-Baska) discusses what a science curriculum for gifted students should include, what teachers can do to make reform efforts successful, and how to…

  3. Integrating Liberal Arts Math and Environmental Science.

    ERIC Educational Resources Information Center

    Langkamp, Greg; Hull, Joe

    This document presents an interdisciplinary course and workshop that aims to develop a better understanding of cooperative learning, interdisciplinary curriculum, and earthquakes among the participants. Students are encouraged to develop their own math and environmental education curriculum. An exercise on earthquakes and power law frequency are…

  4. Marilyn Burns on the Language of Math

    ERIC Educational Resources Information Center

    Instructor, 2006

    2006-01-01

    Math can sometimes seem like a strange language from foreign land--one communicated in symbols, numbers, and geometric figures. When teachers talk about mathematical concepts, even familiar, garden variety words such as "parallel," "power," "even," "odd," "multiply," "difference," "product," "positive," and "negative" take on brand-new meanings.…

  5. Evaluation of "Maths by Email." Final Report

    ERIC Educational Resources Information Center

    Kissane, Barry; McConney, Andrew

    2010-01-01

    "Maths by Email" (MbE) is a free fortnightly email newsletter produced through a partnership between CSIRO Education and the Australian Mathematical Sciences Institute (AMSI), with funding from the Australian Government Department of Education, Employment and Workplace Relations (DEEWR). The principal aim of MbE has been "to…

  6. Online Options for Math-Advanced Students

    ERIC Educational Resources Information Center

    Wessling, Suki

    2012-01-01

    Once upon a time, a student well advanced past grade level in math would have had few choices. Advanced students would invariably outpace the skills of their elementary teachers, and due to age wouldn't have options such as going to the middle school or community college for classes. Soon thereafter, students would enter middle school only to find…

  7. Doubts Cast on Math, Science Teaching Lures

    ERIC Educational Resources Information Center

    Cavanagh, Sean

    2007-01-01

    Few strategies for luring more students and working adults into math and science teaching have proved as popular among elected officials as financial incentives, which try to make one of the least appealing aspects of the job--low pay--a little less daunting. Lawmakers on Capitol Hill are considering a number of bills that would expand existing…

  8. It Does Matter How We Teach Math

    ERIC Educational Resources Information Center

    Rodrigues, Kathleen J.

    2012-01-01

    This paper describes application of innovative practice and procedures in relationship to recognized principles and theory of adult education used in college math instruction. Adult learning principles provide the theoretical constructs and foundation of the practice supporting a learner-centered approach to learning. The purpose was to explore…

  9. Improving Math Success in Higher Education Institutions

    ERIC Educational Resources Information Center

    Bisk, Richard

    2013-01-01

    Many students begin higher education unprepared for college-level work in mathematics and must take non-credit developmental courses. Furthermore, many are "math-phobic" and avoid courses, majors and careers that involve quantitative work. Yet science, technology, engineering and mathematics (STEM) fields are among the few job-growth…

  10. Exploring Best Practices in Developmental Math

    ERIC Educational Resources Information Center

    Cafarella, Brian V.

    2014-01-01

    Currently, many community colleges are struggling with poor student success rates in developmental math. Therefore, this qualitative study focused on employing best practices in developmental mathematics at an urban community college in Dayton, Ohio. Guiding the study were the following research questions: What are the best practices utilized by a…

  11. See the Math behind the Medicine

    ERIC Educational Resources Information Center

    Saunders, Marnie M.

    2010-01-01

    To promote math and science, this author designed an activity to show students that biomedical fields are within their reach. The activity has three distinct goals: (1) To introduce the field of biomedical engineering to students and encourage them in these career pursuits; (2) To give them hands-on experience conducting a biomechanical test; and…

  12. Multiply Math Skills with Literature. Literature Letter.

    ERIC Educational Resources Information Center

    Stoodt, Barbara D.

    1995-01-01

    This column discusses five children's books selected to develop math concepts involving problem solving, reasoning, and communication. The books are "Only One" (Marc Harshman); "The Librarian Who Measured the Earth" (Kathryn Lasky); "Counting Jennie" (Helena C. Pittman); "The Search for Delicious" (Natalie Babbitt); and "The Toothpaste…

  13. In My View. Overcoming Math Anxiety.

    ERIC Educational Resources Information Center

    Fotoples, Robert M.

    2000-01-01

    Describes math anxiety, explaining roadblocks to mathematics success; discussing strategies for overcoming anxiety (e.g., parent involvement, teacher sensitivity, and peer tutoring); and examining the influence of learning styles on mathematics achievement and attitudes. Mathematics teachers must identify students' problems in mathematics, work…

  14. Tic Tac Toe Math. Train the Trainer.

    ERIC Educational Resources Information Center

    Center for Alternative Learning, Bryn Mawr, PA.

    This report describes a project that developed a "Train the Trainer" program that would enable individuals to learn and teach the alternative instructional technique, Tic Tac Toe Math, developed by Richard Cooper for adult basic education students. The pilot workshop conducted as part of the project identified problems that traditional…

  15. Math Anxiety--Causes and Solutions.

    ERIC Educational Resources Information Center

    Robertson, Douglas F.; Claesgens, Joan

    This paper discusses the problems associated with mathematics anxiety, and provides detailed information on the history and structure of the Mathematics Anxiety Program at the University of Minnesota. The seven parts concern: (1) the Continuing Education for Women Program, (2) the development of the Math Anxiety Program, (3) the symptoms of…

  16. Math-Science Bills Advance in Congress

    ERIC Educational Resources Information Center

    Hoff, David J.; Cavanagh, Sean

    2007-01-01

    Improving K-12 instruction and student achievement in mathematics and science is at the heart of separate bills intended to bolster America's economic standing that won overwhelming approval in both houses of Congress last week. The House on April 24 approved the 10,000 Teachers, 10 Million Minds Science and Math Scholarship Act by a vote of…

  17. Bowland Maths--The CPD Modules

    ERIC Educational Resources Information Center

    Onion, Alice

    2011-01-01

    One may have heard of Bowland maths and will know something of the "case studies" that were published in 2008. These are substantial mathematics projects, taking five hours, or more, to complete. Most are set in real or realistic contexts, like "designing a smoothy"--Product Wars, or "devising plans to improve road safety"--Reducing Road…

  18. Fold in Origami and Unfold Math

    ERIC Educational Resources Information Center

    Georgeson, Joseph

    2011-01-01

    Students enjoy origami and like making everything from paper cranes to footballs out of small, colorful squares of paper. They can invent their own shapes and are intrigued by the polyhedrons that they can construct. Paper folding is fun, but where is the math? Unless teachers develop lessons that address mathematical objectives, origami could be…

  19. Integrating Programming into Mathematics: Math 20.

    ERIC Educational Resources Information Center

    Hunka, Dan; And Others

    An elective unit was developed for a course (Math 20) which would teach students to program solutions to typical exercises. Development of the unit took place in a large senior high school in Alberta. The elective is 15 hours long, with the first five hours devoted to learning programming fundamentals and the final ten hours to programming…

  20. Challenging Gifted Students: The Math Olympiads.

    ERIC Educational Resources Information Center

    Kalman, Richard

    2002-01-01

    This article describes the Math Olympiads for Elementary and Middle School, Inc., a non-for profit public foundation dedicated to strengthening the education of gifted youngsters though mathematics competitions. The development of the Olympiads, the program's structure, and the benefits of competition are discussed. Sample questions and answers…

  1. Math: The Not-So-Universal Language

    ERIC Educational Resources Information Center

    Cavanagh, Sean

    2005-01-01

    While math has long been regarded as a universal language because of its foundation in numbers, the subject poses nearly as many hurdles for students with limited English as lessons that rely more heavily on reading, many educators say. Malinda Evans spends about an hour and a half each day teaching mathematics to her 5th graders at Navajo…

  2. Increasing Math Achievement through Use of Music.

    ERIC Educational Resources Information Center

    Bryant-Jones, Marian; Shimmins, Kymberley J.; Vega, Jill D.

    This report describes a program for increasing math achievement through the use of musical interventions including repeated exposure to Mozart classical music and School House Rock, and introduction to teacher-made songs that introduce mathematical concepts in the music classroom. The students of the targeted second and fourth grade classes…

  3. Making Links between Maths and Science

    ERIC Educational Resources Information Center

    Hiscock, Naomi

    2012-01-01

    For some children maths and science are exciting subjects that work side by side, one providing the opportunity to practise and hone skills and knowledge gained from the other. For other children the subjects are disjointed and seem to bear no relationship to each other. Science can provide a wonderful opportunity to practise a variety of math…

  4. "Math for America" Isn't

    ERIC Educational Resources Information Center

    Wolfmeyer, Mark

    2014-01-01

    Aspects of the Math for America organization's actions, aims and affiliations are analyzed for their effects on urban schools and society at large. These aspects are argued as evidence to consider MfA as an agent working against democratic practice and in favor of furthering profit and its resultant inequitable resource distribution. The…

  5. Biomedical Equipment Technology: How Much Math?

    ERIC Educational Resources Information Center

    Gottlieb, Philip

    1978-01-01

    The author discusses the level of mathematics needed in biomedical technology programs. Technical institutes and community colleges across the country have varying math requirements, from first-year college algebra on into calculus. He suggests a study to determine the reasons for the variance, leading eventually to uniform quality. (MF)

  6. Developmental Math, Flipped and Self-Paced

    ERIC Educational Resources Information Center

    Weng, Pangyen

    2015-01-01

    This article describes a developmental math course design that uses flipped instruction and self-paced learning. The design was created and taught at Metropolitan State University, where most students are returning adult students with little preparation in mathematics. The author argues that this design suits the students well: the learning…

  7. I Am a Math Coach: Now What?

    ERIC Educational Resources Information Center

    Rapacki, Lauren J.; Cross Francis, Dionne I.

    2014-01-01

    When one of the authors saw the job description for an elementary school mathematics coach on a state Department of Education website, she recognized it as an opportunity to have her dream job. She knew that making the transition from the classroom to a math teacher leader would afford her the opportunity to have an even greater impact on student…

  8. Guided Investigations in Middle School Math

    ERIC Educational Resources Information Center

    Schroth, Stephen T.; Helfer, Jason A.

    2008-01-01

    Gifted middle school mathematics students often exhibit boundless energy, a desire to exert some degree of control over their learning, and an ability to think logically and abstractly in ways that astound their parents and teachers. Middle school math curriculum that combines guided investigations of real-life problems with product-based…

  9. Mathematicians in Schools: Uncovering Maths' Beautiful Secrets

    ERIC Educational Resources Information Center

    Welch, Bronwyn

    2016-01-01

    Mathematics professionals are working with teachers revealing the reality and beauty that happens in the world of math and to show that this is essentially a "human endeavour," embedded in much of what people do and the ways in which they think. In this article, the author shares vignettes of primary classes working with mathematicians…

  10. Math Placement in California's Public Schools

    ERIC Educational Resources Information Center

    Gao, Niu; Adan, Sara

    2016-01-01

    Last year, the California Legislature passed a new law--the California Mathematics Placement Act--to address widespread concern over equity in the math placement process. The law is aimed at improving the measurement of student performance in order to move more students successfully through the high school curriculum. In this context, researchers…

  11. Integrating Math and Science with Technology.

    ERIC Educational Resources Information Center

    Blume, Joseph; Garcia, Kristi; Mullinax, Kelly; Vogel, Kelly

    This report describes the effect of integrating math and science and employing technology to bridge the gap. The targeted population consisted of primary and secondary students in a diverse, blue-collar, rural community located in northeast central Illinois. The problem of low-test scores and errors on assignments in mathematics was evident and…

  12. Innovative Math for Liberal Arts Majors

    ERIC Educational Resources Information Center

    Strasser, Nora

    2011-01-01

    An innovative Math for Liberal Arts course was designed to provide liberal arts students with the life skills necessary to survive in the 21st century. The course emphasizes application driven mathematics. This course has been successful in changing students' perceptions of the usefulness of the course and improving student success rate as well as…

  13. Doing Math Together to Build Community

    ERIC Educational Resources Information Center

    Rawding, Molly Rothermel; Call, Susan

    2016-01-01

    Last year, Annandale Terrace Elementary School (Annandale, Virginia) began exploring professional learning communities (PLC). In this article, two of Annandale's math coaches share the school's journey. On the basis of their own reflections, the coaches conclude with some recommendations for those considering embarking on a similar journey…

  14. Senior Year Inviting More Math Choices

    ERIC Educational Resources Information Center

    Cavanagh, Sean

    2008-01-01

    When students at Prescott High School sign up to take math as seniors, not all of them will be wading into precalculus or calculus, with in-depth explorations of derivatives and trigonometric functions. Some will instead end up using mathematics to study the Electoral College, or the security of Internet passwords, or how delivery companies ship…

  15. Performing Big Math Ideas across the Grades

    ERIC Educational Resources Information Center

    Gadanidis, George; Hughes, Janette M.

    2011-01-01

    A storied math context helps students engage both emotionally and cognitively with mathematics and helps show that mathematics develops out of human experience. Children's literature also models mathematical storytelling for students, and creates opportunities for them to retell and extend stories. This article describes mathematics investigations…

  16. Math Model for Naval Ship Handling Trainer.

    ERIC Educational Resources Information Center

    Golovcsenko, Igor V.

    The report describes the math model for an experimental ship handling trainer. The training task is that of a replenishment operation at sea. The model includes equations for ship dynamics of a destroyer, propeller-engine response times, ship separation, interaction effects between supply ship and destroyer, and outputs to a visual display system.…

  17. Linking Life Experiences To Classroom Math.

    ERIC Educational Resources Information Center

    Jacque, Ensign

    Despite suggestions for incorporating students' experiences into school math lessons, mathematics education seems to be the last bastion of formalism. This paper reports on a sociocultural study of the use of students' personal experiences in early childhood elementary mathematics lessons. This study documents the use of students' personal…

  18. Phylogenetic Analysis of Brassica rapa MATH-Domain Proteins

    PubMed Central

    Zhao, Liming; Huang, Yong; Hu, Yan; He, Xiaoli; Shen, Wenhui; Liu, Chunlin; Ruan, Ying

    2013-01-01

    The MATH (meprin and TRAF-C homology) domain is a fold of seven anti-parallel β-helices involved in protein-protein interaction. Here, we report the identification and characterization of 90 MATH-domain proteins from the Brassica rapa genome. By sequence analysis together with MATH-domain proteins from other species, the B. rapa MATH-domain proteins can be grouped into 6 classes. Class-I protein has one or several MATH domains without any other recognizable domain; Class-II protein contains a MATH domain together with a conserved BTB (Broad Complex, Tramtrack, and Bric-a-Brac ) domain; Class-III protein belongs to the MATH/Filament domain family; Class-IV protein contains a MATH domain frequently combined with some other domains; Class-V protein has a relative long sequence but contains only one MATH domain; Class-VI protein is characterized by the presence of Peptidase and UBQ (Ubiquitinylation) domains together with one MATH domain. As part of our study regarding seed development of B. rapa, six genes are screened by SSH (Suppression Subtractive Hybridization) and their expression levels are analyzed in combination with seed developmental stages, and expression patterns suggested that Bra001786, Bra03578 and Bra036572 may be seed development specific genes, while Bra001787, Bra020541 and Bra040904 may be involved in seed and flower organ development. This study provides the first characterization of the MATH domain proteins in B. rapa PMID:24179444

  19. Characterization of PVL/ACME-positive methicillin-resistant Staphylococcus aureus (genotypes ST8-MRSA-IV and ST5-MRSA-II) isolated from a university hospital in Japan.

    PubMed

    Kawaguchiya, Mitsuyo; Urushibara, Noriko; Yamamoto, Dai; Yamashita, Toshiharu; Shinagawa, Masaaki; Watanabe, Naoki; Kobayashi, Nobumichi

    2013-02-01

    The ST8 methicillin-resistant Staphylococcus aureus (MRSA) with Staphylococcal cassette chromosome mec (SCCmec) type IVa, known as USA300, is a prevalent community-acquired MRSA (CA-MRSA) clone in the United States and has been spreading worldwide. The USA300 characteristically harbors Panton-Valentine Leukocidin (PVL) genes and the arginine catabolic mobile element (ACME, type I). Prevalence and molecular characteristics of PVL(+) and/or ACME(+) S. aureus were investigated in a university hospital located in northern Japan, for 1,366 S. aureus isolates, including 601 MRSA strains derived from clinical specimens collected from 2008 to 2010. The PVL gene was identified in three MRSA strains with SCCmec IV, which belonged to ST8, spa type t008, coagulase type III, and agr type I. Two PVL-positive MRSA strains had also type I ACME, and were isolated from skin abscess of outpatients who have not travelled abroad recently. One of these PVL(+)/ACME(+) strains carried tet(K), msrA, and aph(3')-IIIa, showing resistance to kanamycin, tetracycline, erythromycin, and ciprofloxacin, suggesting acquisition of more resistance than ST8 CA-MRSA reported in Japan previously. In contrast, another PVL(+)/ACME(+) strain and a PVL(+)/ACME(-) strain were susceptible to more antimicrobials and had less virulence factors than PVL(-)/ACME(+) MRSA strains. Besides the two PVL(+) MRSA strains, ACME (type-ΔII) was identified into seven MRSA strains with SCCmec II belonging to ST5, one of the three spa types (t002, t067, and t071), coagulase type II, and agr type II. These PVL(-)/ACME(+) MRSA strains showed multiple drug resistance and harbored various toxin genes as observed for ST5 PVL(-)/ACME(-) MRSA-II. The present study suggested the spread of ST8-MRSA-IV in northern Japan, and a potential significance of ACME-positive ST5-MRSA-II as an emerging MRSA clone in a hospital.

  20. Graphene Trans-Electrode Membranes

    NASA Astrophysics Data System (ADS)

    Kuan, Aaron; Bo, Lu; Rollings, Ryan; Dressen, Don; Branton, Daniel; Golovchenko, Jene

    2014-03-01

    We report an electrical study of suspended single-layer graphene membranes separating reservoirs of electrolyte solution. Because the opposing reservoirs are separated only by an atomically thin membrane, the trans-conductance (ionic current response to a voltage across the membrane) is extremely sensitive to nanoscale defects in the membrane. This sensitivity allows the precise examination and characterization of intrinsic defects in graphene membranes, as well as engineered defects for devices. We will discuss methods for creating single nanopores or distributed defects in our graphene membranes, with the applications of nanopore DNA sequencing and water desalination in mind.

  1. A Correlation of Community College Math Readiness and Student Success

    NASA Astrophysics Data System (ADS)

    Brown, Jayna Nicole

    Although traditional college students are more prepared for college-level math based on college admissions tests, little data have been collected on nontraditional adult learners. The purpose of this study was to investigate relationships between math placement tests and community college students' success in math courses and persistence to degree or certificate completion. Guided by Tinto's theory of departure and student retention, the research questions addressed relationships and predictability of math Computer-adaptive Placement Assessment and Support System (COMPASS) test scores and students' performance in math courses, persistence in college, and degree completion. After conducting correlation and regression analyses, no significant relationships were identified between COMPASS Math test scores and students' performance (n = 234) in math courses, persistence in college, or degree completion. However, independent t test and chi-squared analyses of the achievements of college students who tested into Basic Math (n = 138) vs. Introduction to Algebra (n = 96) yielded statistically significant differences in persistence (p = .039), degree completion (p < .001), performance (p = .008), and progress ( p = .001), indicating students who tested into Introduction to Algebra were more successful and persisted more often to degree completion. In order to improve instructional methods for Basic Math courses, a 3-day professional development workshop was developed for math faculty focusing on current, best practices in remedial math instruction. Implications for social change include providing math faculty with the knowledge and skills to develop new instructional methods for remedial math courses. A change in instructional methods may improve community college students' math competencies and degree achievement.

  2. Proceeding of the ACM/IEEE-CS Joint Conference on Digital Libraries (1st, Roanoke, Virginia, June 24-28, 2001).

    ERIC Educational Resources Information Center

    Association for Computing Machinery, New York, NY.

    Papers in this Proceedings of the ACM/IEEE-CS Joint Conference on Digital Libraries (Roanoke, Virginia, June 24-28, 2001) discuss: automatic genre analysis; text categorization; automated name authority control; automatic event generation; linked active content; designing e-books for legal research; metadata harvesting; mapping the…

  3. Worrying Thoughts Limit Working Memory Capacity in Math Anxiety.

    PubMed

    Shi, Zhan; Liu, Peiru

    2016-01-01

    Sixty-one high-math-anxious persons and sixty-one low-math-anxious persons completed a modified working memory capacity task, designed to measure working memory capacity under a dysfunctional math-related context and working memory capacity under a valence-neutral context. Participants were required to perform simple tasks with emotionally benign material (i.e., lists of letters) over short intervals while simultaneously reading and making judgments about sentences describing dysfunctional math-related thoughts or sentences describing emotionally-neutral facts about the world. Working memory capacity for letters under the dysfunctional math-related context, relative to working memory capacity performance under the valence-neutral context, was poorer overall in the high-math-anxious group compared with the low-math-anxious group. The findings show a particular difficulty employing working memory in math-related contexts in high-math-anxious participants. Theories that can provide reasonable interpretations for these findings and interventions that can reduce anxiety-induced worrying intrusive thoughts or improve working memory capacity for math anxiety are discussed.

  4. Worrying Thoughts Limit Working Memory Capacity in Math Anxiety

    PubMed Central

    Shi, Zhan; Liu, Peiru

    2016-01-01

    Sixty-one high-math-anxious persons and sixty-one low-math-anxious persons completed a modified working memory capacity task, designed to measure working memory capacity under a dysfunctional math-related context and working memory capacity under a valence-neutral context. Participants were required to perform simple tasks with emotionally benign material (i.e., lists of letters) over short intervals while simultaneously reading and making judgments about sentences describing dysfunctional math-related thoughts or sentences describing emotionally-neutral facts about the world. Working memory capacity for letters under the dysfunctional math-related context, relative to working memory capacity performance under the valence-neutral context, was poorer overall in the high-math-anxious group compared with the low-math-anxious group. The findings show a particular difficulty employing working memory in math-related contexts in high-math-anxious participants. Theories that can provide reasonable interpretations for these findings and interventions that can reduce anxiety-induced worrying intrusive thoughts or improve working memory capacity for math anxiety are discussed. PMID:27788235

  5. Addressing the Math-Practice Gap in Elementary School: Are Tablets a Feasible Tool for Informal Math Practice?

    PubMed Central

    Stacy, Sara T.; Cartwright, Macey; Arwood, Zjanya; Canfield, James P.; Kloos, Heidi

    2017-01-01

    Students rarely practice math outside of school requirements, which we refer to as the “math-practice gap”. This gap might be the reason why students struggle with math, making it urgent to develop means by which to address it. In the current paper, we propose that math apps offer a viable solution to the math-practice gap: Online apps can provide access to a large number of problems, tied to immediate feedback, and delivered in an engaging way. To substantiate this conversation, we looked at whether tablets are sufficiently engaging to motivate children’s informal math practice. Our approach was to partner with education agencies via a community-based participatory research design. The three participating education agencies serve elementary-school students from low-SES communities, allowing us to look at tablet use by children who are unlikely to have extensive access to online math enrichment programs. At the same time, the agencies differed in several structural details, including whether our intervention took place during school time, after school, or during the summer. This allowed us to shed light on tablet feasibility under different organizational constraints. Our findings show that tablet-based math practice is engaging for young children, independent of the setting, the student’s age, or the math concept that was tackled. At the same time, we found that student engagement was a function of the presence of caring adults to facilitate their online math practice. PMID:28270780

  6. Classroom Learning Environment and Gender: Do They Explain Math Self-Efficacy, Math Outcome Expectations, and Math Interest during Early Adolescence?

    ERIC Educational Resources Information Center

    Deacon, Mary M.

    2011-01-01

    Despite initiatives to increase and broaden participation in science, technology, engineering, and mathematics (STEM) fields, women remain underrepresented in STEM. While U.S. girls and women perform as well as, if not better, than boys and men in math, research results indicate that there are significant declines in girls' math self-efficacy,…

  7. Suicide protective factors among trans adults.

    PubMed

    Moody, Chérie; Smith, Nathan Grant

    2013-07-01

    A recent study indicated a suicide attempt rate of 41 % among trans (e.g., trans, transgender, transexual/transsexual, genderqueer, two-spirit) individuals. Although this rate is alarming, there is a dearth of literature regarding suicide prevention for trans individuals. A vital step in developing suicide prevention models is the identification of protective factors. It was hypothesized that social support from friends, social support from family, optimism, reasons for living, and suicide resilience, which are known to protect cis (non-trans) individuals, also protect trans individuals. A sample of self-identified trans Canadian adults (N = 133) was recruited from LGBT and trans LISTSERVs. Data were collected online using a secure survey platform. A three block hierarchical multiple regression model was used to predict suicidal behavior from protective factors. Social support from friends, social support from family, and optimism significantly and negatively predicted 33 % of variance in participants' suicidal behavior after controlling for age. Reasons for living and suicide resilience accounted for an additional 19 % of the variance in participants' suicidal behavior after controlling for age, social support from friends, social support from family, and optimism. Of the factors mentioned above, perceived social support from family, one of three suicide resilience factors (emotional stability), and one of six reasons for living (child-related concerns) significantly and negatively predicted participants' suicidal behavior. Overall, these findings can be used to inform the practices of mental health workers, medical doctors, and suicide prevention workers working with trans clients.

  8. Metacognition and confidence: comparing math to other academic subjects.

    PubMed

    Erickson, Shanna; Heit, Evan

    2015-01-01

    Two studies addressed student metacognition in math, measuring confidence accuracy about math performance. Underconfidence would be expected in light of pervasive math anxiety. However, one might alternatively expect overconfidence based on previous results showing overconfidence in other subject domains. Metacognitive judgments and performance were assessed for biology, literature, and mathematics tests. In Study 1, high school students took three different tests and provided estimates of their performance both before and after taking each test. In Study 2, undergraduates similarly took three shortened SAT II Subject Tests. Students were overconfident in predicting math performance, indeed showing greater overconfidence compared to other academic subjects. It appears that both overconfidence and anxiety can adversely affect metacognitive ability and can lead to math avoidance. The results have implications for educational practice and other environments that require extensive use of math.

  9. Metacognition and confidence: comparing math to other academic subjects

    PubMed Central

    Erickson, Shanna; Heit, Evan

    2015-01-01

    Two studies addressed student metacognition in math, measuring confidence accuracy about math performance. Underconfidence would be expected in light of pervasive math anxiety. However, one might alternatively expect overconfidence based on previous results showing overconfidence in other subject domains. Metacognitive judgments and performance were assessed for biology, literature, and mathematics tests. In Study 1, high school students took three different tests and provided estimates of their performance both before and after taking each test. In Study 2, undergraduates similarly took three shortened SAT II Subject Tests. Students were overconfident in predicting math performance, indeed showing greater overconfidence compared to other academic subjects. It appears that both overconfidence and anxiety can adversely affect metacognitive ability and can lead to math avoidance. The results have implications for educational practice and other environments that require extensive use of math. PMID:26082742

  10. Cis and Trans Isomers of Cycloalkenes

    NASA Astrophysics Data System (ADS)

    Barrows, Susan E.; Eberlein, Thomas H.

    2005-09-01

    As a rule, a trans disubstituted alkene is more stable than the corresponding cis isomer. For cycloalkenes of fewer than eleven members, cis isomers are more stable than their trans counterparts. Although this exception to the normal rule is occasionally noted in beginning organic chemistry textbooks, it is often done without a careful analysis of the reasons behind it. The purpose of this article is to provide that analysis. In order for a cycloalkene to accommodate a trans double bond one or more of the following nonideal geometries must occur: a twisted π bond; pyramidal sp 2 -carbon atoms; nonideal sp 3 bond angles; or longer than normal C C single and double bonds. This article provides a list of experimentally determined relative energies of the cis and trans isomers within the series cycloheptene cycloundecene, along with computationally derived energies at several levels of theory. It also examines the geometric distortions through which cycloalkenes relieve the strain introduced by a trans double bond.

  11. Math Description Engine Software Development Kit

    NASA Technical Reports Server (NTRS)

    Shelton, Robert O.; Smith, Stephanie L.; Dexter, Dan E.; Hodgson, Terry R.

    2010-01-01

    The Math Description Engine Software Development Kit (MDE SDK) can be used by software developers to make computer-rendered graphs more accessible to blind and visually-impaired users. The MDE SDK generates alternative graph descriptions in two forms: textual descriptions and non-verbal sound renderings, or sonification. It also enables display of an animated trace of a graph sonification on a visual graph component, with color and line-thickness options for users having low vision or color-related impairments. A set of accessible graphical user interface widgets is provided for operation by end users and for control of accessible graph displays. Version 1.0 of the MDE SDK generates text descriptions for 2D graphs commonly seen in math and science curriculum (and practice). The mathematically rich text descriptions can also serve as a virtual math and science assistant for blind and sighted users, making graphs more accessible for everyone. The MDE SDK has a simple application programming interface (API) that makes it easy for programmers and Web-site developers to make graphs accessible with just a few lines of code. The source code is written in Java for cross-platform compatibility and to take advantage of Java s built-in support for building accessible software application interfaces. Compiled-library and NASA Open Source versions are available with API documentation and Programmer s Guide at http:/ / prim e.jsc.n asa. gov.

  12. A descriptive study of high school Latino and Caucasian students' values about math, perceived math achievement and STEM career choice

    NASA Astrophysics Data System (ADS)

    Rodriguez Flecha, Samuel

    The purpose of this study was to examine high school students' math values, perceived math achievement, and STEM career choice. Participants (N=515) were rural high school students from the U.S. Northwest. Data was collected by administering the "To Do or Not to Do:" STEM pilot survey. Most participants (n=294) were Latinos, followed by Caucasians (n=142). Fifty-three percent of the students rated their math achievement as C or below. Of high math students, 57% were male. Females were 53% of low math students. Caucasians (61%) rated themselves as high in math in a greater proportion than Latinos (39%). Latinos (58%) rated themselves as low in math in a greater proportion than Caucasians (39%). Math Values play a significant role in students' perceived math achievement. Internal math values (r =.68, R2 =.46, p =.001) influenced perceived math achievement regardless of gender (males: r =.70, R2 =.49, p =.001; females: r =.65, R2 =.43, p =.001), for Latinos (r =.66, R2 =.44, p =.001), and Caucasians (r =.72, R2 =.51, p =.001). External math values (r =.53, R2 =.28, p =.001) influenced perceived math achievement regardless of gender (males: r =.54, R2 =.30, p =.001; females: r =.49, R2 =.24, p =.001), for Latinos (r =.47, R2 =.22, p =.001), and Caucasians (r =.58, R2 =.33, p =.001). Most high-math students indicated an awareness of being good at math at around 11 years old. Low-math students said that they realized that math was difficult for them at approximately 13 years of age. The influence of parents, teachers, and peers may vary at different academic stages. Approximately half of the participants said there was not a person who had significantly impacted their career choice; only a minority said their parents and teachers were influencing them to a STEM career. Parents and teachers are the most influential relationships in students' career choice. More exposure to STEM role models and in a variety of professions is needed. Possible strategies to impact students

  13. 78 FR 2379 - Agency Information Collection Activities; Comment Request; Impact Evaluation of Math Professional...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-11

    ... Agency Information Collection Activities; Comment Request; Impact Evaluation of Math Professional... of Collection: Impact Evaluation of Math Professional Development. OMB Control Number: 1850-NEW. Type..., and teachers for a study of math professional development. The study will provide...

  14. Mechanisms of stochastic focusing and defocusing in biological reaction networks: insight from accurate chemical master equation (ACME) solutions.

    PubMed

    Gursoy, Gamze; Terebus, Anna; Youfang Cao; Jie Liang

    2016-08-01

    Stochasticity plays important roles in regulation of biochemical reaction networks when the copy numbers of molecular species are small. Studies based on Stochastic Simulation Algorithm (SSA) has shown that a basic reaction system can display stochastic focusing (SF) by increasing the sensitivity of the network as a result of the signal noise. Although SSA has been widely used to study stochastic networks, it is ineffective in examining rare events and this becomes a significant issue when the tails of probability distributions are relevant as is the case of SF. Here we use the ACME method to solve the exact solution of the discrete Chemical Master Equations and to study a network where SF was reported. We showed that the level of SF depends on the degree of the fluctuations of signal molecule. We discovered that signaling noise under certain conditions in the same reaction network can lead to a decrease in the system sensitivities, thus the network can experience stochastic defocusing. These results highlight the fundamental role of stochasticity in biological reaction networks and the need for exact computation of probability landscape of the molecules in the system.

  15. Detection of structural and numerical chomosomal abnormalities by ACM-FISH analysis in sperm of oligozoospermic infertility patients

    SciTech Connect

    Schmid, T E; Brinkworth, M H; Hill, F; Sloter, E; Kamischke, A; Marchetti, F; Nieschlag, E; Wyrobek, A J

    2003-11-10

    Modern reproductive technologies are enabling the treatment of infertile men with severe disturbances of spermatogenesis. The possibility of elevated frequencies of genetically and chromosomally defective sperm has become an issue of concern with the increased usage of intracytoplasmic sperm injection (ICSI), which can enable men with severely impaired sperm production to father children. Several papers have been published about aneuploidy in oligozoospermic patients, but relatively little is known about chromosome structural aberrations in the sperm of these patients. We examined sperm from infertile, oligozoospermic individuals for structural and numerical chromosomal abnormalities using a multicolor ACM FISH assay that utilizes DNA probes specific for three regions of chromosome 1 to detect human sperm that carry numerical chromosomal abnormalities plus two categories of structural aberrations: duplications and deletions of 1pter and 1cen, and chromosomal breaks within the 1cen-1q12 region. There was a significant increase in the average frequencies of sperm with duplications and deletions in the infertility patients compared with the healthy concurrent controls. There was also a significantly elevated level of breaks within the 1cen-1q12 region. There was no evidence for an increase in chromosome-1 disomy, or in diploidy. Our data reveal that oligozoospermia is associated with chromosomal structural abnormalities suggesting that, oligozoospermic men carry a higher burden of transmissible, chromosome damage. The findings raise the possibility of elevated levels of transmissible chromosomal defects following ICSI treatment.

  16. Hydrologic effects of phreatophyte control, Acme-Artesia reach of the Pecos River, New Mexico, 1967-82

    USGS Publications Warehouse

    Welder, G.E.

    1988-01-01

    The U.S. Bureau of Reclamation began a phreatophyte clearing and control program in the bottom land of the Acme-Artesia reach of the Pecos River in March 1967. The initial cutting of 19,000 acres of saltcedar trees, the dominant phreatophyte in the area, was completed in May 1969. Saltcedar regrowth continued each year until July 1975, when root plowing eradicated most of the regrowth. The major objective of the clearing and control program was to salvage water that could be put to beneficial use. Measurements of changes in the water table in the bottom land and changes in the base flow of the Pecos River were made in order to determine the hydrologic effects of the program. Some salvage of water was indicated, but it is not readily recognized as an increase in base flow. The quantity of salvage probably is less than the average annual base-flow gain of 19 ,110 acre-ft in the reach during 1967-82. (Author 's abstract)

  17. Human factors in computing systems: focus on patient-centered health communication at the ACM SIGCHI conference.

    PubMed

    Wilcox, Lauren; Patel, Rupa; Chen, Yunan; Shachak, Aviv

    2013-12-01

    Health Information Technologies, such as electronic health records (EHR) and secure messaging, have already transformed interactions among patients and clinicians. In addition, technologies supporting asynchronous communication outside of clinical encounters, such as email, SMS, and patient portals, are being increasingly used for follow-up, education, and data reporting. Meanwhile, patients are increasingly adopting personal tools to track various aspects of health status and therapeutic progress, wishing to review these data with clinicians during consultations. These issues have drawn increasing interest from the human-computer interaction (HCI) community, with special focus on critical challenges in patient-centered interactions and design opportunities that can address these challenges. We saw this community presenting and interacting at the ACM SIGCHI 2013, Conference on Human Factors in Computing Systems, (also known as CHI), held April 27-May 2nd, 2013 at the Palais de Congrès de Paris in France. CHI 2013 featured many formal avenues to pursue patient-centered health communication: a well-attended workshop, tracks of original research, and a lively panel discussion. In this report, we highlight these events and the main themes we identified. We hope that it will help bring the health care communication and the HCI communities closer together.

  18. A multicopper oxidase is essential for manganese oxidation and laccase-like activity in Pedomicrobium sp. ACM 3067.

    PubMed

    Ridge, Justin P; Lin, Marianne; Larsen, Eloise I; Fegan, Mark; McEwan, Alastair G; Sly, Lindsay I

    2007-04-01

    Pedomicrobium sp. ACM 3067 is a budding-hyphal bacterium belonging to the alpha-Proteobacteria which is able to oxidize soluble Mn2+ to insoluble manganese oxide. A cosmid, from a whole-genome library, containing the putative genes responsible for manganese oxidation was identified and a primer-walking approach yielded 4350 bp of novel sequence. Analysis of this sequence showed the presence of a predicted three-gene operon, moxCBA. The moxA gene product showed homology to multicopper oxidases (MCOs) and contained the characteristic four copper-binding motifs (A, B, C and D) common to MCOs. An insertion mutation of moxA showed that this gene was essential for both manganese oxidation and laccase-like activity. The moxB gene product showed homology to a family of outer membrane proteins which are essential for Type I secretion in Gram-negative bacteria. moxBA has not been observed in other manganese-oxidizing bacteria but homologues were identified in the genomes of several bacteria including Sinorhizobium meliloti 1021 and Agrobacterium tumefaciens C58. These results suggest that moxBA and its homologues constitute a family of genes encoding an MCO and a predicted component of the Type I secretion system.

  19. Math Anxiety Assessment with the Abbreviated Math Anxiety Scale: Applicability and Usefulness: Insights from the Polish Adaptation

    PubMed Central

    Cipora, Krzysztof; Szczygieł, Monika; Willmes, Klaus; Nuerk, Hans-Christoph

    2015-01-01

    Math anxiety has an important impact on mathematical development and performance. However, although math anxiety is supposed to be a transcultural trait, assessment instruments are scarce and are validated mainly for Western cultures so far. Therefore, we aimed at examining the transcultural generality of math anxiety by a thorough investigation of the validity of math anxiety assessment in Eastern Europe. We investigated the validity and reliability of a Polish adaptation of the Abbreviated Math Anxiety Scale (AMAS), known to have very good psychometric characteristics in its original, American-English version as well as in its Italian and Iranian adaptations. We also observed high reliability, both for internal consistency and test-retest stability of the AMAS in the Polish sample. The results also show very good construct, convergent and discriminant validity: The factorial structure in Polish adult participants (n = 857) was very similar to the one previously found in other samples; AMAS scores correlated moderately in expected directions with state and trait anxiety, self-assessed math achievement and skill as well temperamental traits of emotional reactivity, briskness, endurance, and perseverance. Average scores obtained by participants as well as gender differences and correlations with external measures were also similar across cultures. Beyond the cultural comparison, we used path model analyses to show that math anxiety relates to math grades and self-competence when controlling for trait anxiety. The current study shows transcultural validity of math anxiety assessment with the AMAS. PMID:26648893

  20. Math5 expression and function in the central auditory system

    PubMed Central

    Saul, Sara M.; Brzezinski, Joseph A.; Altschuler, Richard A.; Shore, Susan E.; Rudolph, Dellaney D.; Kabara, Lisa L.; Halsey, Karin E.; Hufnagel, Robert B.; Zhou, Jianxun; Dolan, David F.; Glaser, Tom

    2008-01-01

    The basic helix-loop-helix (bHLH) transcription factor Math5 (Atoh7) is required for retinal ganglion cell (RGC) and optic nerve development. Using Math5-lacZ knockout mice, we have identified an additional expression domain for Math5 outside the eye, in functionally connected structures of the central auditory system. In the adult hindbrain, the cytoplasmic Math5-lacZ reporter is expressed within the ventral cochlear nucleus (VCN), in a subpopulation of neurons that project to medial nucleus of the trapezoid body (MNTB), lateral superior olive (LSO), and lateral lemniscus (LL). These cells were identified as globular and small spherical bushy cells based on their morphology, abundance, distribution within the cochlear nucleus (CN), co-expression of Kv1.1, Kv3.1b and Kcnq4 potassium channels, and projection patterns within the auditory brainstem. Math5-lacZ is also expressed by cochlear root neurons in the auditory nerve. During embryonic development, Math5-lacZ was detected in precursor cells emerging from the caudal rhombic lip from embryonic day (E)12 onwards, consistent with the time course of CN neurogenesis. These cells co-express MafB, Math1 and Math5 and are post-mitotic. Math5 expression in the CN was verified by mRNA in situ hybridization, and the identity of positive neurons was confirmed morphologically using a Math5-Cre BAC transgene with an alkaline phosphatase reporter. The hindbrains of Math5 mutants appear grossly normal, with the exception of the CN. Although overall CN dimensions are unchanged, the lacZ positive cells are significantly smaller in Math5 −/− mice compared to Math5 +/− mice, suggesting these neurons may function abnormally. The Auditory Brainstem Response (ABR) of Math5 mutants was evaluated in a BALB/cJ congenic background. ABR thresholds of Math5 −/− mice were similar to those of wild-type and heterozygous mice, but the interpeak latencies for Peaks II-IV were significantly altered. These temporal changes are consistent

  1. Trans-Pacific Astronomy Experiment Project Status

    NASA Technical Reports Server (NTRS)

    Hsu, Eddie

    2000-01-01

    The Trans-Pacific Astronomy Experiment is Phase 2 of the Trans-Pacific High Data Rate Satcom Experiments following the Trans-Pacific High Definition Video Experiment. It is a part of the Global Information Infrastructure-Global Interoperability for Broadband Networks Project (GII-GIBN). Provides global information infrastructure involving broadband satellites and terrestrial networks and access to information by anyone, anywhere, at any time. Collaboration of government, industry, and academic organizations demonstrate the use of broadband satellite links in a global information infrastructure with emphasis on astronomical observations, collaborative discussions and distance learning.

  2. WTP Calculation Sheet: Determining the LAW Glass Former Constituents and Amounts for G2 and Acm Models. 24590-LAW-M4C-LFP-00002, Rev. B

    SciTech Connect

    Gimpel, Rodney F.; Kruger, Albert A.

    2013-12-16

    The purpose of this calculation is to determine the LAW glass former recipe and additives with their respective amounts. The methodology and equations contained herein are to be used in the G2 and ACM models until better information is supplied by R&T efforts. This revision includes calculations that determines the mass and volume of the bulk chemicals/minerals needed per batch. Plus, it contains calculations (for the G2 model) to help prevent overflow in LAW Feed Preparation Vessel.

  3. Changing the Developmental Trajectory in Early Math through a Two-Year Preschool Math Intervention

    ERIC Educational Resources Information Center

    Starkey, Prentice; Klein, Alice; DeFlorio, Lydia

    2013-01-01

    There is a national need for effective interventions to improve school readiness and subsequent achievement in mathematics for students from low-income families. The purpose of this study was to implement and evaluate a 2-year preschool math intervention that began at preschool entry when children were 3 years of age and continued through the end…

  4. Creative Math Assessment: How the "Fizz & Martina Approach" Helps Prepare Students for the Math Assessment Tests.

    ERIC Educational Resources Information Center

    Vaille, John; Kushins, Harold

    Many school districts around the nation are re-evaluating how they measure student performance in mathematics. Calls have been made for alternative, authentic assessment tools that go beyond simple, and widely ineffective, multiple-choice tests. This book examines how the Fizz & Martina math video series provides students with hands-on…

  5. Closing the Math Achievement Gap: Institutions Find Success with MyMathLab

    ERIC Educational Resources Information Center

    Stewart, Pearl

    2012-01-01

    Institutions find success with Pearson Education's MyMathLab. The Department of Mathematical Sciences at the University of Memphis (UM) reported a narrowing of the achievement gap between Black and White students. According to the study conducted by UM professors and titled "The Effectiveness of Blended Instruction in Postsecondary General…

  6. Placing Math Reform: Locating Latino English Learners in Math Classrooms and Communities

    ERIC Educational Resources Information Center

    Erbstein, Nancy

    2015-01-01

    This article explores how place matters in public school reform efforts intended to promote more equitable opportunities and outcomes. Qualitative case studies of three California middle schools' eighth grade math reforms and the resulting opportunities for Latino English learners are presented, using the conceptual frameworks of critical human…

  7. Evaluating Math Recovery: Assessing the Causal Impact of Math Recovery on Student Achievement

    ERIC Educational Resources Information Center

    Smith, Thomas; Cobb, Paul; Farran, Dale; Cordray, David; Munter, Charles; Dunn, Alfred

    2010-01-01

    The authors' goal was to evaluate the potential of Math Recovery (MR), a pullout, one-to-one tutoring program that has been designed to increase mathematics achievement among low-performing first graders, thereby closing the school-entry achievement gap and enabling participants to achieve at the level of their higher-performing peers in the…

  8. Applied Math. Course Materials: Math 111, 112, 113. Seattle Tech Prep Applied Academics Project.

    ERIC Educational Resources Information Center

    South Seattle Community Coll., Washington.

    This publication contains materials for three courses in Applied Math in the Applied Academics program at South Seattle Community College. It begins with the article, "Community College Applied Academics: The State of the Art?" (George B. Neff), which describes the characteristics, model, courses, and coordination activity that make up…

  9. Math Teachers' Attitudes towards Photo Math Application in Solving Mathematical Problem Using Mobile Camera

    ERIC Educational Resources Information Center

    Hamadneh, Iyad M.; Al-Masaeed, Aslan

    2015-01-01

    This study aimed at finding out mathematics teachers' attitudes towards photo math application in solving mathematical problems using mobile camera; it also aim to identify significant differences in their attitudes according to their stage of teaching, educational qualifications, and teaching experience. The study used judgmental/purposive…

  10. A 90-day subchronic feeding study of genetically modified maize expressing Cry1Ac-M protein in Sprague-Dawley rats.

    PubMed

    Liu, Pengfei; He, Xiaoyun; Chen, Delong; Luo, Yunbo; Cao, Sishuo; Song, Huan; Liu, Ting; Huang, Kunlun; Xu, Wentao

    2012-09-01

    The cry1Ac-M gene, coding one of Bacillus thuringiensis (Bt) crystal proteins, was introduced into maize H99 × Hi IIB genome to produce insect-resistant GM maize BT-38. The food safety assessment of the BT-38 maize was conducted in Sprague-Dawley rats by a 90-days feeding study. We incorporated maize grains from BT-38 and H99 × Hi IIB into rodent diets at three concentrations (12.5%, 25%, 50%) and administered to Sprague-Dawley rats (n=10/sex/group) for 90 days. A commercialized rodent diet was fed to an additional group as control group. Body weight, feed consumption and toxicological response variables were measured, and gross as well as microscopic pathology were examined. Moreover, detection of residual Cry1Ac-M protein in the serum of rats fed with GM maize was conducted. No death or adverse effects were observed in the current feeding study. No adverse differences in the values of the response variables were observed between rats that consumed diets containing GM maize BT-38 and non-GM maize H99 × Hi IIB. No detectable Cry1Ac-M protein was found in the serum of rats after feeding diets containing GM maize for 3 months. The results demonstrated that BT-38 maize is as safe as conventional non-GM maize.

  11. Math anxiety differentially affects WAIS-IV arithmetic performance in undergraduates.

    PubMed

    Buelow, Melissa T; Frakey, Laura L

    2013-06-01

    Previous research has shown that math anxiety can influence the math performance level; however, to date, it is unknown whether math anxiety influences performance on working memory tasks during neuropsychological evaluation. In the present study, 172 undergraduate students completed measures of math achievement (the Math Computation subtest from the Wide Range Achievement Test-IV), math anxiety (the Math Anxiety Rating Scale-Revised), general test anxiety (from the Adult Manifest Anxiety Scale-College version), and the three Working Memory Index tasks from the Wechsler Adult Intelligence Scale-IV Edition (WAIS-IV; Digit Span [DS], Arithmetic, Letter-Number Sequencing [LNS]). Results indicated that math anxiety predicted performance on Arithmetic, but not DS or LNS, above and beyond the effects of gender, general test anxiety, and math performance level. Our findings suggest that math anxiety can negatively influence WAIS-IV working memory subtest scores. Implications for clinical practice include the utilization of LNS in individuals expressing high math anxiety.

  12. Cognitive Correlates of Math Skills in Third-Grade Students

    ERIC Educational Resources Information Center

    Mannamaa, Mairi; Kikas, Eve; Peets, Katlin; Palu, Anu

    2012-01-01

    Math achievement is not a unidimensional construct but includes different skills that require different cognitive abilities. The focus of this study was to examine associations between a number of cognitive abilities and three domains of math skills (knowing, applying and problem solving) simultaneously in a multivariate framework. Participants…

  13. The Math Promise: Celebrating at Home and School

    ERIC Educational Resources Information Center

    Legnard, Danielle; Austin, Susan

    2014-01-01

    The Math Promise is a contract that family members make with one another. They commit to spending mathematical time together; getting to know each other's mathematical thinking and understanding; and finding time to play math games, solve problems, and notice mathematics in their daily lives. Whether parents and children are cooking in the…

  14. Variance in Math Achievement Attributable to Visual Cognitive Constructs

    ERIC Educational Resources Information Center

    Oehlert, Jeremy J.

    2012-01-01

    Previous research has reported positive correlations between math achievement and the cognitive constructs of spatial visualization, working memory, and general intelligence; however, no single study has assessed variance in math achievement attributable to all three constructs, examined in combination. The current study fills this gap in the…

  15. Project: Strategies for Sex Fairness. Math and Science for All.

    ERIC Educational Resources Information Center

    Mook, Corena; Legg, Marilyn

    One of a series of instructional packets to aid schools in reducing sex stereotypes, this inservice guide for use with school personnel is designed to increase awareness of the extent to which Kansans limit their career options by avoiding math and science. Focus is on why people do not develop more math knowledge and/or skills (such as…

  16. National Migrant Education Program Math Skills Information System.

    ERIC Educational Resources Information Center

    de la Rosa, Raul; Hackett, Eugene deG.

    The educational background and issues which shaped the design of the National Migrant Education Program Math Skills Information System are explained in this report, along with a full description of the features of the system and its operation. It discusses the variety of math skills information used to permit teachers to input and receive math…

  17. Brief Report: Gum Chewing Affects Standardized Math Scores in Adolescents

    ERIC Educational Resources Information Center

    Johnston, Craig A.; Tyler, Chermaine; Stansberry, Sandra A.; Moreno, Jennette P.; Foreyt, John P.

    2012-01-01

    Gum chewing has been shown to improve cognitive performance in adults; however, gum chewing has not been evaluated in children. This study examined the effects of gum chewing on standardized test scores and class grades of eighth grade math students. Math classes were randomized to a gum chewing (GC) condition that provided students with gum…

  18. Classroom Discussions: Seeing Math Discourse in Action, Grades K-6

    ERIC Educational Resources Information Center

    Anderson, Nancy; Chapin, Suzanne; O'Connor, Cathy

    2011-01-01

    "Classroom Discussions: Seeing Math Discourse in Action, Grades K-6" provides preservice and inservice instructors, coaches and facilitators with real, classroom-based video examples that illustrate the principles and practices covered in the authors' best-selling book, "Classroom Discussions: Using Math Talk to Help Students Learn, Grade K-6,…

  19. Calendar Math in Preschool and Primary Classrooms: Questioning the Curriculum

    ERIC Educational Resources Information Center

    Ethridge, Elizabeth Ann; King, James R.

    2005-01-01

    The Early Childhood profession would benefit from a systematic inquiry into "calendar math." The authors offer an organized framework for this work. After a description of calendar math practices, the authors examine problematic aspects of its implementation, based on developmental theory. The essay concludes with a call for more reflective…

  20. Remediation of Math Anxiety in Preservice Elementary School Teachers

    ERIC Educational Resources Information Center

    Dunkle, Susan M.

    2010-01-01

    The purpose of this study was to measure the level of math anxiety in preservice elementary teachers, and then to determine if remediation methods would lower the measured level of anxiety in these same preservice teachers. The 10-day study provided an intense remediation using a time-series design to measure change on the Revised Math Anxiety…

  1. Saxon Elementary School Math. Revised. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2007

    2007-01-01

    "Saxon Elementary School Math," published by Harcourt Achieve, is a core curriculum for students in kindergarten through grade 5. A distinguishing feature of "Saxon Elementary School Math" is its use of a distributed approach, as opposed to a chapter-based approach, for instruction and assessment. The program is built on the…

  2. Saxon Elementary School Math. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2006

    2006-01-01

    The What Works Clearinghouse (WWC) reviewed seven studies of the "Saxon Elementary School Math program." A distinguishing feature of "Saxon Elementary School Math" is its use of a distributed approach, as opposed to a chapter-based approach, for instruction and assessment. One of these studies met WWC standards with…

  3. Math Wars: A Guide for Parents and Teachers

    ERIC Educational Resources Information Center

    Latterell, Carmen M.

    2008-01-01

    Parents are concerned about their children's math learning. Teachers are concerned about math teaching. When parents see what children are bringing home under the new curriculum, it is clear that their children are not working on the same mathematics that parents remember from the time when they were in school. But, the problem goes beyond grades…

  4. Toolkit: Becoming a Science, Technology, Engineering, and Math (STEM) Mentor

    ERIC Educational Resources Information Center

    Corporation for National and Community Service, 2010

    2010-01-01

    President Obama has recognized the need to move students from the middle to the top of the pack in math and science as a national priority. Mentorship is often cited as a key strategy for exciting, supporting, and keeping students and young scientists and engineers in the fields of science, technology, engineering, and math (STEM). This is…

  5. Downtown Math and Language: Levels 1-6.

    ERIC Educational Resources Information Center

    Kizer, Pat; And Others

    Developed by the Small Schools Career Education Development Project, the guide, divided into 6 units, provides 279 activities for math and language instruction in grades 1-6. Units are titled: Bank, Grocery Store, Hardware Store, Pandora's Box, Restaurant, and Streets, Bikes, and Highways. Both math and language activities are provided for each…

  6. Project Shuttle simulation math model coordination catalog, revision 1

    NASA Technical Reports Server (NTRS)

    1974-01-01

    A catalog is presented of subsystem and environment math models used or planned for space shuttle simulations. The purpose is to facilitate sharing of similar math models between shuttle simulations. It provides information on mach model requirements, formulations, schedules, and contact persons for further information.

  7. Analyzing Math-to-Mastery through Brief Experimental Analysis

    ERIC Educational Resources Information Center

    Everett, Gregory E.; Swift, Honora S.; McKenney, Elizabeth L. W.; Jewell, Jeremy D.

    2016-01-01

    The current study evaluated the effectiveness of individualized math-to-mastery (MTM) interventions, selected though brief experimental analysis (BEA), at increasing math fluency skills for three elementary-aged females. As MTM has only been investigated as a multicomponent intervention, the present study utilized BEA to identify those specific…

  8. Math and Economics: Implementing Authentic Instruction in Grades K-5

    ERIC Educational Resources Information Center

    Althauser, Krista; Harter, Cynthia

    2016-01-01

    The purpose of this study is to outline a partnership program that involved a local elementary school district, an institution of higher education, the local business community, and a state economic education advocacy group to integrate economics into math in grades K-5. The "Economics: Math in Real Life" program was provided in…

  9. Integrating Literacy and Math: Strategies for K-6 Teachers

    ERIC Educational Resources Information Center

    Fogelberg, Ellen; Skalinder, Carole; Satz, Patti; Hiller, Barbara; Bernstein, Lisa; Vitantonio, Sandra

    2008-01-01

    Many K-6 teachers and students still think of mathematics as a totally separate subject from literacy. Yet incorporating math content into the language arts block helps students gain skills for reading many kinds of texts. Bringing reading, writing, and talking into the math classroom supports the development of conceptual knowledge and problem…

  10. Student Math Achievement and Out-of-Field Teaching

    ERIC Educational Resources Information Center

    Hill, Jason G.; Dalton, Ben

    2013-01-01

    This study investigates the distribution of math teachers with a major or certification in math using data from the National Center for Education Statistics' High School Longitudinal Study of 2009 (HSLS:09). The authors discuss the limitations of existing data sources for measuring teacher qualifications, such as the Schools and Staffing Survey…

  11. The Effect of Cooperative Groups on Math Anxiety

    ERIC Educational Resources Information Center

    Batton, Melissa

    2010-01-01

    Research indicates that many students have difficulty with mathematics, which can be attributed to many factors including math anxiety. Students who experience math anxiety have poor attitudes towards mathematics and perform below grade level based on class and statewide assessments. The purpose of this quasi-experimental quantitative study was to…

  12. Factors Affecting Children's Math Achievement Scores in Preschool

    ERIC Educational Resources Information Center

    Kilday, Carolyn R.

    2010-01-01

    This dissertation contains three independently conducted studies on factors that affect the math achievement scores of preschool-aged children. The first study examined the associations between children's executive-functioning (EF) and math achievement scores at 54 months of age. Results suggest that EF is strongly associated with children's…

  13. Opening the World of Mathematics: The Daily Math Discussion

    ERIC Educational Resources Information Center

    Donoahue, Zoe

    2016-01-01

    During the author's everyday math discussions with her class, young children talk about mathematical ideas, theories, and concepts within a predictable structure. These discussions include many concepts from--and beyond--the first-grade math curriculum, and their depth and complexity build throughout the school year. Concepts and skills include…

  14. Number Wonders: 171 Activities to Meet Math Standards & Inspire Students

    ERIC Educational Resources Information Center

    Kuhns, Catherine Jones

    2006-01-01

    In this book, author Catherine Jones Kuhns introduces student- and teacher-friendly math activities designed to get students thinking like mathematicians and loving mathematics, while addressing content standards through grade 2. She also shows how to make math fun for students, get children actively engaged in learning, create a student-centered…

  15. CYBERCHASE: The Interactive Math Adventure Series Enters Its Fifth Season

    ERIC Educational Resources Information Center

    Donlevy, Jim

    2006-01-01

    CYBERCHASE, an interactive math-based adventure series for young viewers, is entering its fifth season on public broadcasting stations in the United States. This article explore season highlights and suggests benefits of using CYBERCHASE to supplement math lessons in school and at home.

  16. Problem Solving and the Use of Math in Physics Courses

    ERIC Educational Resources Information Center

    Redish, Edward F.

    2006-01-01

    Mathematics is an essential element of physics problem solving, but experts often fail to appreciate exactly how they use it. Math may be the language of science, but math-in-physics is a distinct dialect of that language. Physicists tend to blend conceptual physics with mathematical symbolism in a way that profoundly affects the way equations are…

  17. Math and Science Strategies for English Learners with Learning Disabilities

    ERIC Educational Resources Information Center

    Peterson, Patricia; Johnson, Gae; Showalter, Stephen

    2012-01-01

    Students with learning disabilities have significantly lower achievement in math and science than students from the general population. If these students with learning disabilities also are English Learners, the challenges for success in math and science are even more difficult. Teachers need to infuse best practices into their classrooms to…

  18. Math and Science Gateways to California's Fastest Growing Careers

    ERIC Educational Resources Information Center

    EdSource, 2008

    2008-01-01

    Some students--and parents--think math and science are not too important for their future. As everyday life becomes more dependent on technology, most people will need a better background in math and science to succeed in today's global economy. To get high-paying jobs in some of California's fastest-growing occupations, a strong background in…

  19. How Math Anxiety Relates to Number-Space Associations.

    PubMed

    Georges, Carrie; Hoffmann, Danielle; Schiltz, Christine

    2016-01-01

    Given the considerable prevalence of math anxiety, it is important to identify the factors contributing to it in order to improve mathematical learning. Research on math anxiety typically focusses on the effects of more complex arithmetic skills. Recent evidence, however, suggests that deficits in basic numerical processing and spatial skills also constitute potential risk factors of math anxiety. Given these observations, we determined whether math anxiety also depends on the quality of spatial-numerical associations. Behavioral evidence for a tight link between numerical and spatial representations is given by the SNARC (spatial-numerical association of response codes) effect, characterized by faster left-/right-sided responses for small/large digits respectively in binary classification tasks. We compared the strength of the SNARC effect between high and low math anxious individuals using the classical parity judgment task in addition to evaluating their spatial skills, arithmetic performance, working memory and inhibitory control. Greater math anxiety was significantly associated with stronger spatio-numerical interactions. This finding adds to the recent evidence supporting a link between math anxiety and basic numerical abilities and strengthens the idea that certain characteristics of low-level number processing such as stronger number-space associations constitute a potential risk factor of math anxiety.

  20. How Math Anxiety Relates to Number–Space Associations

    PubMed Central

    Georges, Carrie; Hoffmann, Danielle; Schiltz, Christine

    2016-01-01

    Given the considerable prevalence of math anxiety, it is important to identify the factors contributing to it in order to improve mathematical learning. Research on math anxiety typically focusses on the effects of more complex arithmetic skills. Recent evidence, however, suggests that deficits in basic numerical processing and spatial skills also constitute potential risk factors of math anxiety. Given these observations, we determined whether math anxiety also depends on the quality of spatial-numerical associations. Behavioral evidence for a tight link between numerical and spatial representations is given by the SNARC (spatial-numerical association of response codes) effect, characterized by faster left-/right-sided responses for small/large digits respectively in binary classification tasks. We compared the strength of the SNARC effect between high and low math anxious individuals using the classical parity judgment task in addition to evaluating their spatial skills, arithmetic performance, working memory and inhibitory control. Greater math anxiety was significantly associated with stronger spatio-numerical interactions. This finding adds to the recent evidence supporting a link between math anxiety and basic numerical abilities and strengthens the idea that certain characteristics of low-level number processing such as stronger number–space associations constitute a potential risk factor of math anxiety. PMID:27683570

  1. Data Driven Math Intervention: What the Numbers Say

    ERIC Educational Resources Information Center

    Martin, Anthony W.

    2013-01-01

    This study was designed to determine whether or not data driven math skills groups would be effective in increasing student academic achievement. From this topic three key questions arose: "Would the implementation of data driven math skills groups improve student academic achievement more than standard instruction as measured by the…

  2. The Oregon Vo-Tech Math Project. Final Report.

    ERIC Educational Resources Information Center

    Linn-Benton Community Coll., Albany, OR.

    Covering the time period of January 1974 to June 1975, the report describes the activities of an ongoing project to provide verbal problem sets for occupational math courses offered in Oregon community colleges and secondary schools. The problems were selected to provide the math skills necessary for job entry and performance in several…

  3. Math Sense: The Look, Sound, and Feel of Effective Instruction

    ERIC Educational Resources Information Center

    Moynihan, Christine

    2012-01-01

    How is that you can walk into a classroom and gain an overall sense of the quality of math instruction taking place there? What contributes to getting that sense? In "Math Sense," Chris Moynihan explores some of the components that comprise the look, sound, and feel of effective teaching and learning. Does the landscape of the classroom feature…

  4. Do the Math: Course Redesign's Impact on Learning and Scheduling

    ERIC Educational Resources Information Center

    Squires, John; Faulkner, Jerry; Hite, Carl

    2009-01-01

    The math department at Cleveland State Community College embarked upon course redesign in 2008. As a result of this project, student engagement, learning, and success rates have increased dramatically. By including both developmental and college level math courses in the redesign, the department has been able to implement innovative scheduling and…

  5. Impact of Enhanced Anchored Instruction in Inclusive Math Classrooms

    ERIC Educational Resources Information Center

    Bottge, Brian A.; Toland, Michael D.; Gassaway, Linda; Butler, Mark; Choo, Sam; Griffen, Ann Katherine; Ma, Xin

    2015-01-01

    The Common Core State Standards for Mathematics will place more pressure on special education and math teachers to raise the skill levels of all students, especially those with disabilities in math (MD). The purpose of this study was to assess the effects of enhanced anchored instruction (EAI) on students with and without MD in co-taught general…

  6. Math Disabilities and Reading Disabilities: Can They Be Separated?

    ERIC Educational Resources Information Center

    Swanson, H. Lee; Jerman, Olga; Zheng, Xinhua

    2009-01-01

    This article synthesizes some of the published literature that selectively compares the cognitive functioning of children with math disabilities (MDs) with average-achieving children and poor readers (children with reading disabilities [RDs] or comorbid disabilities [RDs + MDs]). All studies in the synthesis report reading, IQ, and math scores for…

  7. An Integration of Math with Auto Technician Courses

    ERIC Educational Resources Information Center

    Valenzuela, Hector

    2012-01-01

    This article describes the development of the contextualized math, the course design, student teaching and daily interaction with the students, and the implementation aspects of the research project designed to develop contextualized mathematics and integrate it into the Auto Technician courses. The applied math curriculum was integrated into…

  8. The Reliability of Randomly Generated Math Curriculum-Based Measurements

    ERIC Educational Resources Information Center

    Strait, Gerald G.; Smith, Bradley H.; Pender, Carolyn; Malone, Patrick S.; Roberts, Jarod; Hall, John D.

    2015-01-01

    "Curriculum-Based Measurement" (CBM) is a direct method of academic assessment used to screen and evaluate students' skills and monitor their responses to academic instruction and intervention. Interventioncentral.org offers a math worksheet generator at no cost that creates randomly generated "math curriculum-based measures"…

  9. Effects of Math Anxiety on Student Success in Higher Education

    ERIC Educational Resources Information Center

    Nunez-Pena, M. I.; Suarez-Pellicioni, M.; Bono, R.

    2013-01-01

    This study examines whether math anxiety and negative attitudes toward mathematics have an effect on university students' academic achievement in a methodological course forming part of their degree. A total of 193 students were presented with a math anxiety test and some questions about their enjoyment, self-confidence and motivation regarding…

  10. Classroom Environment, Achievement Goals and Maths Performance: Gender Differences

    ERIC Educational Resources Information Center

    Gherasim, Loredana Ruxandra; Butnaru, Simona; Mairean, Cornelia

    2013-01-01

    This study investigated how gender shapes the relationships between classroom environment, achievement goals and maths performance. Seventh-grade students ("N"?=?498) from five urban secondary schools filled in achievement goal orientations and classroom environment scales at the beginning of the second semester. Maths performance was…

  11. Math in Plain English: Literacy Strategies for the Mathematics Classroom

    ERIC Educational Resources Information Center

    Benjamin, Amy

    2011-01-01

    Do word problems and math vocabulary confuse students in your mathematics classes? Do simple keywords like "value" and "portion" seem to mislead them? Many words that students already know can have a different meaning in mathematics. To grasp that difference, students need to connect English literacy skills to math. Successful students speak,…

  12. Using Food to Boost Math and Science Skills

    ERIC Educational Resources Information Center

    Duffrin, Melanie W.; Cuson, Diane; Phillips, Sharon K.

    2005-01-01

    There is a clear need for improved math and science education, according to the National Institutes of Health, National Science Foundation, and National Science Board. The Food, Math and Science Teaching Enhancement Resource (FoodMASTER) Initiative was developed in response to this need. The FoodMASTER Initiative is a compilation of programs aimed…

  13. Restructuring Schools To Be Math Friendly to Females.

    ERIC Educational Resources Information Center

    Karp, Karen; Shakeshaft, Charol

    1997-01-01

    The gender gap in math Scholastic Aptitude Test scores, attributable to course avoidance, lack of confidence, and unbalanced classroom instruction, can have serious consequences for young women, such as limited university selection, limited career choices, and lower lifetime salaries. Solutions include hiring math specialists, establishing role…

  14. Science and Math in the Library Media Center Using GLOBE.

    ERIC Educational Resources Information Center

    Aquino, Teresa L.; Levine, Elissa R.

    2003-01-01

    Describes the Global Learning and Observations to Benefit the Environment (GLOBE) program which helps school library media specialists and science and math teachers bring earth science, math, information literacy, information technology, and student inquiry into the classroom. Discusses use of the Internet to create a global network to study the…

  15. Measuring Junior High Math Growth in the NCLB Environment.

    ERIC Educational Resources Information Center

    Flicek, Michael

    2003-01-01

    Examines the implementation and utility of the blocked longitudinal growth method (BLGM) to understand math course placement practices in junior high schools in one district. Found that movement away from a conventional and normative approach to a more flexible approach based on growth in math skills seems to be supported. (Author/MLF)

  16. Helping Children Be Successful in Math: A Parent's Guide

    ERIC Educational Resources Information Center

    Online Submission, 2008

    2008-01-01

    Family involvement in children's math education is critical to helping kids succeed. "Helping Children Be Successful in Math" explains why--and how. (Contains 5 endnotes.) [Abstract modified to meet ERIC guidelines. This document was produced by DreamBox Learning, Inc.

  17. Teaching Strategies for Effective Fifth Grade Math Intervention

    ERIC Educational Resources Information Center

    Zank, Alicia A.

    2015-01-01

    The purpose of the study is to determine what effects explicit and systematic math intervention instruction will have on student's performance on math assessments. The study will focus on a small group of fifth grade students that have been identified as needing targeted intervention (tier 2) and intensive interventions (tier 1) through the…

  18. enVisionMATH. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2013

    2013-01-01

    "enVisionMATH," published by Pearson Education, Inc., is a core curriculum for students in kindergarten through grade 6. The program seeks to help students develop an understanding of math concepts through problem-based instruction, small-group interaction, and visual learning with a focus on reasoning and modeling. Differentiated…

  19. Developmental Changes in Working Memory, Updating, and Math Achievement

    ERIC Educational Resources Information Center

    Lee, Kerry; Bull, Rebecca

    2016-01-01

    Children with higher working memory or updating (WMU) capacity perform better in math. What is less clear is whether and how this relation varies with grade. Children (N = 673, kindergarten to Grade 9) participated in a 4-year cross-sequential study. Data from 3 WMU (Listening Recall, Mr. X, and an updating task) and a standardized math task…

  20. Structural aspects of trans-translation.

    PubMed

    Shpanchenko, Olga V; Golovin, Andrey V; Bugaeva, Elizaveta Y; Isaksson, Leif A; Dontsova, Olga A

    2010-02-01

    trans-Translation is a process which the bacterial cells apply to rescue the ribosomes that are arrested during the translation of damaged mRNA and to get rid of the mRNA and the product polypeptide. In the course of trans-translation, the mRNA-like domain of tmRNA replaces the nonstop messenger RNA bound to the ribosome. Although several structural elements of tmRNA and SmpB known to be essential for correct determination of resume codon, the molecular mechanism of trans-translation is not well understood. Computer modeling has been used to develop a model for the spatial organization of the tmRNA inside the ribosome at different stages of trans-translation leading to a proposal for the mechanism of the template-switching process.

  1. Acme Landfill Expansion. Appendices.

    DTIC Science & Technology

    1982-01-01

    existing operation area; plus use of a portion of the 178-acre southern parcel, sloping away from the existing hills. (Areas A and B) 3. Use of existing...acre parcel, less 40 acres for dredge spoil, and plus use of a portion of the 178-acre southern parcel, sloping away from the existing hills. (Areas...acre southern parcel filling against the existing hills. (Areas A, B, C, and D) 6. Use of existing operation area; plus use of the full 200-acre

  2. Math Academy: Play Ball! Explorations in Data Analysis & Statistics. Book 3: Supplemental Math Materials for Grades 3-8

    ERIC Educational Resources Information Center

    Rimbey, Kimberly

    2008-01-01

    Created by teachers for teachers, the Math Academy tools and activities included in this booklet were designed to create hands-on activities and a fun learning environment for the teaching of mathematics to the students. This booklet contains the "Math Academy--Play Ball! Explorations in Data Analysis & Statistics," which teachers can use to…

  3. Math Academy: Dining Out! Explorations in Fractions, Decimals, & Percents. Book 4: Supplemental Math Materials for Grades 3-8

    ERIC Educational Resources Information Center

    Rimbey, Kimberly

    2007-01-01

    Created by teachers for teachers, the Math Academy tools and activities included in this booklet were designed to create hands-on activities and a fun learning environment for the teaching of mathematics to the students. This booklet contains the "Math Academy--Dining Out! Explorations in Fractions, Decimals, and Percents," which teachers can use…

  4. A Descriptive Study of High School Latino and Caucasian Students' Values about Math, Perceived Math Achievement and STEM Career Choice

    ERIC Educational Resources Information Center

    Rodriguez Flecha, Samuel

    2012-01-01

    The purpose of this study was to examine high school students' math values, perceived math achievement, and STEM career choice. Participants (N=515) were rural high school students from the U.S. Northwest. Data was collected by administering the "To Do or Not to Do:" STEM pilot survey. Most participants (n=294) were Latinos, followed by…

  5. Instant Math Storymats with Hands-on Activities for Building Essential Primary Math Skills, Grades K-2.

    ERIC Educational Resources Information Center

    Spann, Mary Beth

    This book contains 18 reproducible Math Storymats which can be a refreshing addition to any early elementary math program. Each storymat is accompanied by two separate read-aloud story selections that guide children in using plastic disk-shaped markers to interact with the mats in specific and open-ended ways. Together the mats and the…

  6. Effects of a Mathematics Methods Course on Prospective Elementary School Teachers' Math Attitudes, Math Anxiety and Teaching Performance.

    ERIC Educational Resources Information Center

    Teague, P. Terrett; Austin-Martin, George G.

    This study focused on anxiety, both math and situational, and its relationship to teaching performance. Preservice elementary teachers were given a methods course on teaching mathematics and, after five weeks, were assigned a group of children to instruct twice a week. A positive correlation was found between performance in teaching math and…

  7. Math anxiety and exposure to statistics in messages about genetically modified foods: effects of numeracy, math self-efficacy, and form of presentation.

    PubMed

    Silk, Kami J; Parrott, Roxanne L

    2014-01-01

    Health risks are often communicated to the lay public in statistical formats even though low math skills, or innumeracy, have been found to be prevalent among lay individuals. Although numeracy has been a topic of much research investigation, the role of math self-efficacy and math anxiety on health and risk communication processing has received scant attention from health communication researchers. To advance theoretical and applied understanding regarding health message processing, the authors consider the role of math anxiety, including the effects of math self-efficacy, numeracy, and form of presenting statistics on math anxiety, and the potential effects for comprehension, yielding, and behavioral intentions. The authors also examine math anxiety in a health risk context through an evaluation of the effects of exposure to a message about genetically modified foods on levels of math anxiety. Participants (N = 323) were randomly assigned to read a message that varied the presentation of statistical evidence about potential risks associated with genetically modified foods. Findings reveal that exposure increased levels of math anxiety, with increases in math anxiety limiting yielding. Moreover, math anxiety impaired comprehension but was mediated by perceivers' math confidence and skills. Last, math anxiety facilitated behavioral intentions. Participants who received a text-based message with percentages were more likely to yield than participants who received either a bar graph with percentages or a combined form. Implications are discussed as they relate to math competence and its role in processing health and risk messages.

  8. PUMAS: Practical Uses of Math And Science

    NASA Astrophysics Data System (ADS)

    Kahn, R. A.

    2009-12-01

    For more than ten years, PUMAS has provided a forum for disseminating peer-reviewed examples of Practical Uses of Math And Science, aimed at helping pre-college teachers enrich their presentation of math and science topics. Contributors include scientists, engineers, and content experts from many disciplines. The innovative ideas in PUMAS examples tend to be treasures, containing the ‘sparks’ of understanding that comes only from having real-life experience with the material. Examples can be essays, anecdotes, problems, demonstrations, or activities, and can be written in any style that serves the material well. They are keyed to the National Standards and Benchmarks, which provide the critical connection to K-12 curriculum guidelines, and the peer-review process involves at least one scientist with a relevant background, and at least one teacher at an appropriate grade level. The PUMAS Web Site has recently been upgraded. It is now a NASA-wide facility, recognized by both the National Science Teachers Association (NSTA) and the National Council of Teachers of Mathematics (NCTM). This presentation will describe and illustrate the operation of PUMAS, will highlight a few of our many treasures, and will appeal to scientists interested in contributing meaningfully to pre-college education to consider submitting examples to PUMAS.

  9. The Effects of a Math Racetrack with Two Elementary Students with Learning Disabilities

    ERIC Educational Resources Information Center

    Beveridge, Breann R.; Weber, Kimberly P.; Derby, K. Mark; McLaughlin, T. F.

    2005-01-01

    A classroom intervention employing math racetracks was carried out to teach math facts to two elementary students with learning disabilities. A math racetrack is a drill and practice procedure where known and unknown facts are placed on a sheet of paper like an oval racetrack. The effectiveness of using math racetracks was evaluated with a…

  10. Contextual Factors Related to Math Anxiety in Second-Grade Children

    ERIC Educational Resources Information Center

    Jameson, Molly M.

    2014-01-01

    As the United States falls farther behind other countries in standardized math assessments, the author seeks to understand why U.S. students perform so poorly. One of the possible explanations to U.S. students' poor math performance may be math anxiety. However, math anxiety in elementary school children is a neglected area in the research. The…

  11. Grade-Aligned Math Instruction for Secondary Students with Moderate Intellectual Disability

    ERIC Educational Resources Information Center

    Browder, Diane M.; Jimenez, Bree A.; Trela, Katherine

    2012-01-01

    The purpose of this study was to examine the effects of grade-aligned math instruction on math skill acquisition of four middle schools with moderate intellectual disability. Teachers were trained to follow a task analysis to teach grade-aligned math to middle school students using adapted math problem stories and graphic organizers. The teacher…

  12. Supporting English Language Learners in Math Class, Grades 6-8

    ERIC Educational Resources Information Center

    Melanese, Kathy; Chung, Luz; Forbes, Cheryl

    2011-01-01

    This new addition to Math Solutions "Supporting English Language Learners in Math Class series" offers a wealth of lessons and strategies for modifying grades 6-8 instruction. Section I presents an overview of teaching math to English learners: the research, the challenges, the linguistic demands of a math lesson, and specific strategies and…

  13. Errors in Multi-Digit Arithmetic and Behavioral Inattention in Children with Math Difficulties

    ERIC Educational Resources Information Center

    Raghubar, Kimberly; Cirino, Paul; Barnes, Marcia; Ewing-Cobbs, Linda; Fletcher, Jack; Fuchs, Lynn

    2009-01-01

    Errors in written multi-digit computation were investigated in children with math difficulties. Third- and fourth-grade children (n = 291) with coexisting math and reading difficulties, math difficulties, reading difficulties, or no learning difficulties were compared. A second analysis compared those with severe math learning difficulties, low…

  14. Insecure attachment is associated with math anxiety in middle childhood.

    PubMed

    Bosmans, Guy; De Smedt, Bert

    2015-01-01

    Children's anxiety for situations requiring mathematical problem solving, a concept referred to as math anxiety, has a unique and detrimental impact on concurrent and long-term mathematics achievement and life success. Little is known about the factors that contribute to the emergence of math anxiety. The current study builds on the hypothesis that math anxiety might reflect a maladaptive affect regulation mechanism that is characteristic for insecure attachment relationships. To test this hypothesis, 87 children primary school children (M age = 10.34 years; SD age = 0.63) filled out questionnaires measuring insecure attachment and math anxiety. They all completed a timed and untimed standardized test of mathematics achievement. Our data revealed that individual differences in math anxiety were significantly related to insecure attachment, independent of age, sex, and IQ. Both tests of mathematics achievement were associated with insecure attachment and this effect was mediated by math anxiety. This study is the first to indicate that math anxiety might develop in the context of insecure parent-child attachment relationships.

  15. Nursing students' confidence in medication calculations predicts math exam performance.

    PubMed

    Andrew, Sharon; Salamonson, Yenna; Halcomb, Elizabeth J

    2009-02-01

    The aim of this study was to examine the psychometric properties, including predictive validity, of the newly-developed nursing self-efficacy for mathematics (NSE-Math). The NSE-Math is a 12 item scale that comprises items related to mathematic and arithmetic concepts underpinning medication calculations. The NSE-Math instrument was administered to second year Bachelor of Nursing students enrolled in a nursing practice subject. Students' academic results for a compulsory medication calculation examination for this subject were collected. One-hundred and twelve students (73%) completed both the NSE-Math instrument and the drug calculation assessment task. The NSE-Math demonstrated two factors 'Confidence in application of mathematic concepts to nursing practice' and 'Confidence in arithmetic concepts' with 63.5% of variance explained. Cronbach alpha for the scale was 0.90. The NSE-Math demonstrated predictive validity with the medication calculation examination results (p=0.009). Psychometric testing suggests the NSE-Math is a valid measure of mathematics self-efficacy of second year nursing students.

  16. Cognitive and behavioral attention in children with math difficulties.

    PubMed

    Gold, Alanna B; Ewing-Cobbs, Linda; Cirino, Paul; Fuchs, Lynn S; Stuebing, Karla K; Fletcher, Jack M

    2013-01-01

    Cognitive assessments and behavioral ratings of attention were used to examine the relation of inattention to math performance in children. Third grade students with math difficulties (MD; n = 17) and math and reading difficulties (MDRD; n = 35) were administered the Attentional Network Test (ANT), as well as achievement and intelligence measures. Strengths and Weaknesses of ADHD-Symptoms and Normal-Behavior-IV (SWAN-IV) Inattention ratings were collected from teachers. Two comparison groups were also recruited: a typically achieving group (n = 23) and a group that responded to a math-tutoring intervention (responders; n = 54). On the ANT, children with MD and MDRD did not perform significantly different than typically achieving children or responders on measures of alerting and orienting attention and executive control. All subgroups did demonstrate performance patterns that were expected on the ANT. However, performance across blocks of the task was inconsistent, suggesting poor reliability. There were no relations between ANT performance and SWAN-IV behavioral inattention scores, though behavioral ratings of inattention correlated significantly with math performance. Children with MD and MDRD may have more difficulty with distraction and attention to detail in contextual situations, as opposed to impulsive responding in these settings. The lack of relation between cognitive attention and math performance may suggest that either the ANT does not assess the relevant attention constructs associated with math difficulties or may parallel studies of attention deficit/hyperactivity disorder (ADHD) in which cognitive and behavioral assessments are weakly related.

  17. Are Students with High Ability in Math More Motivated in Math and Science than Other Students?

    ERIC Educational Resources Information Center

    Andersen, Lori; Cross, Tracy L.

    2014-01-01

    Expectancy-value motivation profiles were identified in a sample of US ninth-grade students in 2009 (n = 19,259) using latent profile analysis. Of four distinct profiles, two were high, one typical, and one low in math and in science. In each area, the two high profiles were distinguished by (1) high self-efficacy with lower utility value and (2)…

  18. Math anxiety in second and third graders and its relation to mathematics achievement.

    PubMed

    Wu, Sarah S; Barth, Maria; Amin, Hitha; Malcarne, Vanessa; Menon, Vinod

    2012-01-01

    Although the detrimental effects of math anxiety in adults are well understood, few studies have examined how it affects younger children who are beginning to learn math in a formal academic setting. Here, we examine the relationship between math anxiety and math achievement in second and third graders. In response to the need for a grade-appropriate measure of assessing math anxiety in this group we first describe the development of Scale for Early Mathematics Anxiety (SEMA), a new measure for assessing math anxiety in second and third graders that is based on the Math Anxiety Rating Scale. We demonstrate the construct validity and reliability of the SEMA and use it to characterize the effect of math anxiety on standardized measures of math abilities, as assessed using the Mathematical Reasoning and Numerical Operations subtests of the Wechsler Individual Achievement Test (WIAT-II). Math achievement, as measured by the WIAT-II Math Composite score, was significantly and negatively correlated with SEMA but not with trait anxiety scores. Additional analyses showed that SEMA scores were strongly correlated with Mathematical Reasoning scores, which involves more complex verbal problem solving. SEMA scores were weakly correlated with Numerical Operations which assesses basic computation skills, suggesting that math anxiety has a pronounced effect on more demanding calculations. We also found that math anxiety has an equally detrimental impact on math achievement regardless of whether children have an anxiety related to numbers or to the situational and social experience of doing math. Critically, these effects were unrelated to trait anxiety, providing the first evidence that the specific effects of math anxiety can be detected in the earliest stages of formal math learning in school. Our findings provide new insights into the developmental origins of math anxiety, and further underscore the need to remediate math anxiety and its deleterious effects on math achievement

  19. Math/science education action conference report

    SciTech Connect

    Not Available

    1990-05-01

    On October 8--10, 1989, the US Department of Energy, the Lawrence Hall of Science, and the Lawrence Berkeley Laboratory sponsored a Math/Science Education Action Conference in Berkeley, California. The conference was co-chaired by Admiral James D. Watkins, Secretary of Energy, and Dr. Glenn T. Seaborg Chairman of the Lawrence Hall of Science. Nearly 250 scientists, educators, business executives, and government leaders came together to develop a concrete plan of action for restructuring and revitalizing mathematics and science education. Their target was to improve education for an entire cohort of children--the Class of 2007, the children born this school year--and their governing principle was one of collaboration, both between Federal agencies, and between public and private sectors. The report of the conference co-chairmen and participants is provided in this document. 41 figs.

  20. Project TIMS (Teaching Integrated Math/Science)

    NASA Technical Reports Server (NTRS)

    Edwards, Leo, Jr.

    1993-01-01

    The goal of this project is to increase the scientific knowledge and appreciation bases and skills of pre-service and in-service middle school teachers, so as to impact positively on teaching, learning, and student retention. This report lists the objectives and summarizes the progress thus far. Included is the working draft of the TIMS (Teaching Integrated Math/Science) curriculum outline. Seven of the eight instructional subject-oriented modules are also included. The modules include informative materials and corresponding questions and educational activities in a textbook format. The subjects included here are the universe and stars; the sun and its place in the universe; our solar system; astronomical instruments and scientific measurements; the moon and eclipses; the earth's atmosphere: its nature and composition; and the earth: directions, time, and seasons. The module not included regards winds and circulation.

  1. Experimental determination of the partitioning coefficient and volatility of important BVOC oxidation products using the Aerosol Collection Module (ACM) coupled to a PTR-ToF-MS

    NASA Astrophysics Data System (ADS)

    Gkatzelis, G.; Hohaus, T.; Tillmann, R.; Schmitt, S. H.; Yu, Z.; Schlag, P.; Wegener, R.; Kaminski, M.; Kiendler-Scharr, A.

    2015-12-01

    Atmospheric aerosol can alter the Earth's radiative budget and global climate but can also affect human health. A dominant contributor to the submicrometer particulate matter (PM) is organic aerosol (OA). OA can be either directly emitted through e.g. combustion processes (primary OA) or formed through the oxidation of organic gases (secondary organic aerosol, SOA). A detailed understanding of SOA formation is of importance as it constitutes a major contribution to the total OA. The partitioning between the gas and particle phase as well as the volatility of individual components of SOA is yet poorly understood adding uncertainties and thus complicating climate modelling. In this work, a new experimental methodology was used for compound-specific analysis of organic aerosol. The Aerosol Collection Module (ACM) is a newly developed instrument that deploys an aerodynamic lens to separate the gas and particle phase of an aerosol. The particle phase is directed to a cooled sampling surface. After collection particles are thermally desorbed and transferred to a detector for further analysis. In the present work, the ACM was coupled to a Proton Transfer Reaction-Time of Flight-Mass Spectrometer (PTR-ToF-MS) to detect and quantify organic compounds partitioning between the gas and particle phase. This experimental approach was used in a set of experiments at the atmosphere simulation chamber SAPHIR to investigate SOA formation. Ozone oxidation with subsequent photochemical aging of β-pinene, limonene and real plant emissions from Pinus sylvestris (Scots pine) were studied. Simultaneous measurement of the gas and particle phase using the ACM-PTR-ToF-MS allows to report partitioning coefficients of important BVOC oxidation products. Additionally, volatility trends and changes of the SOA with photochemical aging are investigated and compared for all systems studied.

  2. Choke or thrive? The relation between salivary cortisol and math performance depends on individual differences in working memory and math-anxiety.

    PubMed

    Mattarella-Micke, Andrew; Mateo, Jill; Kozak, Megan N; Foster, Katherine; Beilock, Sian L

    2011-08-01

    In the current study, we explored how a person's physiological arousal relates to their performance in a challenging math situation as a function of individual differences in working memory (WM) capacity and math-anxiety. Participants completed demanding math problems before and after which salivary cortisol, an index of arousal, was measured. The performance of lower WM individuals did not depend on cortisol concentration or math-anxiety. For higher WM individuals high in math-anxiety, the higher their concentration of salivary cortisol following the math task, the worse their performance. In contrast, for higher WM individuals lower in math-anxiety, the higher their salivary cortisol concentrations, the better their performance. For individuals who have the capacity to perform at a high-level (higher WMs), whether physiological arousal will lead an individual to choke or thrive depends on math-anxiety.

  3. trans-Bis(hexafluoroantimonato)(phthalocyaninato)copper(II).

    PubMed

    Gardberg, A S; Ibers, J A

    2001-05-01

    The title compound, trans-bis(hexafluoroantimonato-F)(phthalocyaninato-kappa(4)N(29,30,31,32))copper(II), [Cu(SbF(6))(2)(C(32)H(16)N(8))] or Cu(pc)(SbF(6))(2) (pc is phthalocyaninate), comprises a six-coordinate Cu atom, lying on an inversion center, bonded to four N atoms of a phthalocyanine ring and to F atoms of two trans SbF(6)(-) groups. The compound is presumed to consist of a Cu(II) center and a doubly oxidized phthalocyanine ring, by analogy with Cu(pc)(ReO(4))(2).

  4. TranScreen-N: Method for rapid screening of trans-ungual drug delivery enhancers.

    PubMed

    Murthy, S Narasimha; Vaka, Siva Ram Kiran; Sammeta, Srinivasa Murthy; Nair, Anroop B

    2009-11-01

    Topical monotherapy of nail diseases such as onychomycosis and nail psoriasis has been less successful due to poor permeability of the human nail plate to topically administered drugs. Chemical enhancers are utilized to improve the drug delivery across the nail plate. Choosing the most effective chemical enhancers for the given drug and formulation is highly critical in determining the efficacy of topical therapy of nail diseases. Screening the large pool of enhancers using currently followed diffusion cell experiments would be tedious and expensive. The main objective of this study is to develop TranScreen-N, a high throughput method of screening trans-ungual drug permeation enhancers. It is a rapid microwell plate based method which involves two different treatment procedures; the simultaneous exposure treatment and the sequential exposure treatment. In the present study, several chemicals were evaluated by TranScreen-N and by diffusion studies in the Franz diffusion cell (FDC). Good agreement of in vitro drug delivery data with TranScreen-N data provided validity to the screening technique. In TranScreen-N technique, the enhancers can be grouped according to whether they need to be applied before or simultaneously with drugs (or by either procedures) to enhance the drug delivery across the nail plate. TranScreen-N technique can significantly reduce the cost and duration required to screen trans-ungual drug delivery enhancers.

  5. Math and science illiteracy: Social and economic impacts

    SciTech Connect

    Williams, J.L.

    1994-05-01

    Today`s highly competitive global economy is being driven by increasingly rapid technological development. This paper explores the problems of math and science illiteracy in the United States and the potential impact on our economic survival in this environment during the next century. Established educational methods that reward task performance, emphasize passive lecture, and fail to demonstrate relevance to real life are partly to blame. Social norms, stereotypes, and race and gender bias also have an impact. To address this crisis, we need to question the philosophy of an educational system that values task over concept. Many schools have already initiated programs at all grade levels to make math and science learning more relevant, stimulating, and fun. Teaching methods that integrate math and science learning with teamwork, social context, and other academic subjects promote the development of higher-order thinking skills and help students see math and science as necessary skills.

  6. Proprioceptor pathway development is dependent on Math1

    NASA Technical Reports Server (NTRS)

    Bermingham, N. A.; Hassan, B. A.; Wang, V. Y.; Fernandez, M.; Banfi, S.; Bellen, H. J.; Fritzsch, B.; Zoghbi, H. Y.

    2001-01-01

    The proprioceptive system provides continuous positional information on the limbs and body to the thalamus, cortex, pontine nucleus, and cerebellum. We showed previously that the basic helix-loop-helix transcription factor Math1 is essential for the development of certain components of the proprioceptive pathway, including inner-ear hair cells, cerebellar granule neurons, and the pontine nuclei. Here, we demonstrate that Math1 null embryos lack the D1 interneurons and that these interneurons give rise to a subset of proprioceptor interneurons and the spinocerebellar and cuneocerebellar tracts. We also identify three downstream genes of Math1 (Lh2A, Lh2B, and Barhl1) and establish that Math1 governs the development of multiple components of the proprioceptive pathway.

  7. The relationships among working memory, math anxiety, and performance.

    PubMed

    Ashcraft, M H; Kirk, E P

    2001-06-01

    Individuals with high math anxiety demonstrated smaller working memory spans, especially when assessed with a computation-based span task. This reduced working memory capacity led to a pronounced increase in reaction time and errors when mental addition was performed concurrently with a memory load task. The effects of the reduction also generalized to a working memory-intensive transformation task. Overall, the results demonstrated that an individual difference variable, math anxiety, affects on-line performance in math-related tasks and that this effect is a transitory disruption of working memory. The authors consider a possible mechanism underlying this effect--disruption of central executive processes--and suggest that individual difference variables like math anxiety deserve greater empirical attention, especially on assessments of working memory capacity and functioning.

  8. Going Green: the Bohn-Meyer Math-Science Odyssey

    NASA Video Gallery

    More than 200 seventh-graders recently experienced a variety of hands-on learning activities during the 2011 Bohn-Meyer Math and Science Odyssey at Antelope Valley College in Lancaster, Calif. Spon...

  9. Help Students Tunnel Their Way to Math and Writing Skills.

    ERIC Educational Resources Information Center

    MacMath, Russ

    1987-01-01

    A teacher describes how a cardboard box tunnel was used to capitalize on children's fascination with boxes. The finished tunnel offers opportunities for honing math and writing skills. Layouts for tunnels and related activities are suggested. (MT)

  10. The Effects of Math Anxiety on Post-Secondary Developmental Students as Related to Achievement, Gender, and Age

    ERIC Educational Resources Information Center

    Woodard, Teresa

    2004-01-01

    Having taught developmental mathematics for a number of years, the author is keenly aware of the effects of math anxiety on developmental math students. Math-anxious students complain of such things as nervousness, inability to concentrate, a blank mind, and a feeling of sickness when they are confronted with taking a math test. Math anxiety is…

  11. Undergraduate nursing students' perceptions regarding factors that affect math abilities

    NASA Astrophysics Data System (ADS)

    Pyo, Katrina A.

    2011-07-01

    A review of the nursing literature reveals many undergraduate nursing students lack proficiency with basic mathematical skills, those necessary for safe medication preparation and administration. Few studies exploring the phenomenon from the undergraduate nursing student perspective are reported in the nursing literature. The purpose of this study was to explore undergraduate nursing students’ perceptions of math abilities, factors that affect math abilities, the use of math in nursing, and the extent to which specific math skills were addressed throughout a nursing curriculum. Polya’s Model for Problem Solving and the Bloom’s Taxonomy of Educational Objectives, Affective Domain served as the theoretical background for the study. Qualitative and quantitative methods were utilized to obtain data from a purposive sample of undergraduate nursing students from a private university in western Pennsylvania. Participants were selected based on the proficiency level with math skills, as determined by a score on the Elsevier’s HESI™ Admission Assessment (A2) Exam, Math Portion. Ten students from the “Excellent” benchmark group and eleven students from the “Needing Additional Assistance or Improvement” benchmark group participated in one-on-one, semi-structured interviews, and completed a 25-item, 4-point Likert scale survey that rated confidence levels with specific math skills and the extent to which these skills were perceived to be addressed in the nursing curriculum. Responses from the two benchmark groups were compared and contrasted. Eight themes emerged from the qualitative data. Findings related to mathematical approach and confidence levels with specific math skills were determined to be statistically significant.

  12. STS-2: SAIL non-avionics subsystems math model requirements

    NASA Technical Reports Server (NTRS)

    Bennett, W. P.; Herold, R. W.

    1980-01-01

    Simulation of the STS-2 Shuttle nonavionics subsystems in the shuttle avionics integration laboratory (SAIL) is necessary for verification of the integrated shuttle avionics system. The math model (simulation) requirements for each of the nonavionics subsystems that interfaces with the Shuttle avionics system is documented and a single source document for controlling approved changes (by the SAIL change control panel) to the math models is provided.

  13. Motivation for math in rural schools: student and teacher perspectives

    NASA Astrophysics Data System (ADS)

    Hardré, Patricia L.

    2011-06-01

    Rural schools, students, teachers, administrators, families and community leaders face unique challenges from those of their urban and suburban counterparts. This paper investigates motivation in rural secondary schools, with a particular focus on mathematics, from teacher and student perspectives. It integrates recent research on math learning and motivation from the fields of educational psychology, human neuroscience and rural education, to present an integrated systemic view of motivation for learning math in rural schools.

  14. Biotransformation of trans-1-chloro-3,3,3-trifluoropropene (trans-HCFO-1233zd)

    SciTech Connect

    Schmidt, Tobias; Bertermann, Rüdiger; Rusch, George M.; Tveit, Ann; Dekant, Wolfgang

    2013-05-01

    trans-1-Chloro-3,3,3-trifluoropropene (trans-HCFO-1233zd) is a novel foam blowing and precision cleaning agent with a very low impact for global warming and ozone depletion. trans-HCFO-1233zd also has a low potential for toxicity in rodents and is negative in genotoxicity testing. The biotransformation of trans-HCFO-1233zd and kinetics of metabolite excretion with urine were assessed in vitro and in animals after inhalation exposures. For in vitro characterization, liver microsomes from rats, rabbits and humans were incubated with trans-HCFO-1233zd. Male Sprague Dawley rats and female New Zealand White rabbits were exposed to 2,000, 5,000 and 10,000 ppm for 6 h and urine was collected for 48 h after the end of the exposure. Study specimens were analyzed for metabolites using {sup 19}F NMR, LC-MS/MS and GC/MS. S-(3,3,3-trifluoro-trans-propenyl)-glutathione was identified as predominant metabolite of trans-HCFO-1233zd in all microsomal incubation experiments in the presence of glutathione. Products of the oxidative biotransformation of trans-HCFO-1233zd were only minor metabolites when glutathione was present. In rats, both 3,3,3-trifluorolactic acid and N-acetyl-(3,3,3-trifluoro-trans-propenyl)-L-cysteine were observed as major urinary metabolites. 3,3,3-Trifluorolactic acid was not detected in the urine of rabbits. Quantitation showed rapid excretion of both metabolites in both species (t{sub 1/2} < 6 h) and the extent of biotransformation of trans-HCFO-1233zd was determined as approximately 0.01% of received dose in rabbits and approximately 0.002% in rats. trans-HCFO-1233zd undergoes both oxidative biotransformation and glutathione conjugation at very low rates. The low extent of biotransformation and the rapid excretion of metabolites formed are consistent with the very low potential for toxicity of trans-HCFO-1233zd in mammals. - Highlights: ► No lethality and clinical signs were observed. ► Glutathione S-transferase and cytochrome P-450 dependent

  15. Biotransformation of trans-1-chloro-3,3,3-trifluoropropene (trans-HCFO-1233zd).

    PubMed

    Schmidt, Tobias; Bertermann, Rüdiger; Rusch, George M; Tveit, Ann; Dekant, Wolfgang

    2013-05-01

    trans-1-Chloro-3,3,3-trifluoropropene (trans-HCFO-1233zd) is a novel foam blowing and precision cleaning agent with a very low impact for global warming and ozone depletion. trans-HCFO-1233zd also has a low potential for toxicity in rodents and is negative in genotoxicity testing. The biotransformation of trans-HCFO-1233zd and kinetics of metabolite excretion with urine were assessed in vitro and in animals after inhalation exposures. For in vitro characterization, liver microsomes from rats, rabbits and humans were incubated with trans-HCFO-1233zd. Male Sprague Dawley rats and female New Zealand White rabbits were exposed to 2,000, 5,000 and 10,000ppm for 6h and urine was collected for 48h after the end of the exposure. Study specimens were analyzed for metabolites using (19)F NMR, LC-MS/MS and GC/MS. S-(3,3,3-trifluoro-trans-propenyl)-glutathione was identified as predominant metabolite of trans-HCFO-1233zd in all microsomal incubation experiments in the presence of glutathione. Products of the oxidative biotransformation of trans-HCFO-1233zd were only minor metabolites when glutathione was present. In rats, both 3,3,3-trifluorolactic acid and N-acetyl-(3,3,3-trifluoro-trans-propenyl)-l-cysteine were observed as major urinary metabolites. 3,3,3-Trifluorolactic acid was not detected in the urine of rabbits. Quantitation showed rapid excretion of both metabolites in both species (t1/2<6h) and the extent of biotransformation of trans-HCFO-1233zd was determined as approximately 0.01% of received dose in rabbits and approximately 0.002% in rats. trans-HCFO-1233zd undergoes both oxidative biotransformation and glutathione conjugation at very low rates. The low extent of biotransformation and the rapid excretion of metabolites formed are consistent with the very low potential for toxicity of trans-HCFO-1233zd in mammals.

  16. Does Geographic Setting Alter the Roles of Academically Supportive Factors? African American Adolescents' Friendships, Math Self-Concept, and Math Performance

    ERIC Educational Resources Information Center

    Jones, Martin H.; Irvin, Matthew J.; Kibe, Grace W.

    2012-01-01

    The study is one of few to examine how living in rural, suburban, or urban settings may alter factors supporting African Americans adolescents' math performance. The study examines the relationship of math self-concept and perceptions of friends' academic behaviors to African American students' math performance. Participants (N = 1,049) are…

  17. Dynamic social power modulates neural basis of math calculation.

    PubMed

    Harada, Tokiko; Bridge, Donna J; Chiao, Joan Y

    2012-01-01

    Both situational (e.g., perceived power) and sustained social factors (e.g., cultural stereotypes) are known to affect how people academically perform, particularly in the domain of mathematics. The ability to compute even simple mathematics, such as addition, relies on distinct neural circuitry within the inferior parietal and inferior frontal lobes, brain regions where magnitude representation and addition are performed. Despite prior behavioral evidence of social influence on academic performance, little is known about whether or not temporarily heightening a person's sense of power may influence the neural bases of math calculation. Here we primed female participants with either high or low power (LP) and then measured neural response while they performed exact and approximate math problems. We found that priming power affected math performance; specifically, females primed with high power (HP) performed better on approximate math calculation compared to females primed with LP. Furthermore, neural response within the left inferior frontal gyrus (IFG), a region previously associated with cognitive interference, was reduced for females in the HP compared to LP group. Taken together, these results indicate that even temporarily heightening a person's sense of social power can increase their math performance, possibly by reducing cognitive interference during math performance.

  18. Training the approximate number system improves math proficiency.

    PubMed

    Park, Joonkoo; Brannon, Elizabeth M

    2013-10-01

    Humans and nonhuman animals share an approximate number system (ANS) that permits estimation and rough calculation of quantities without symbols. Recent studies show a correlation between the acuity of the ANS and performance in symbolic math throughout development and into adulthood, which suggests that the ANS may serve as a cognitive foundation for the uniquely human capacity for symbolic math. Such a proposition leads to the untested prediction that training aimed at improving ANS performance will transfer to improvement in symbolic-math ability. In the two experiments reported here, we showed that ANS training on approximate addition and subtraction of arrays of dots selectively improved symbolic addition and subtraction. This finding strongly supports the hypothesis that complex math skills are fundamentally linked to rudimentary preverbal quantitative abilities and provides the first direct evidence that the ANS and symbolic math may be causally related. It also raises the possibility that interventions aimed at the ANS could benefit children and adults who struggle with math.

  19. Dynamic social power modulates neural basis of math calculation

    PubMed Central

    Harada, Tokiko; Bridge, Donna J.; Chiao, Joan Y.

    2013-01-01

    Both situational (e.g., perceived power) and sustained social factors (e.g., cultural stereotypes) are known to affect how people academically perform, particularly in the domain of mathematics. The ability to compute even simple mathematics, such as addition, relies on distinct neural circuitry within the inferior parietal and inferior frontal lobes, brain regions where magnitude representation and addition are performed. Despite prior behavioral evidence of social influence on academic performance, little is known about whether or not temporarily heightening a person's sense of power may influence the neural bases of math calculation. Here we primed female participants with either high or low power (LP) and then measured neural response while they performed exact and approximate math problems. We found that priming power affected math performance; specifically, females primed with high power (HP) performed better on approximate math calculation compared to females primed with LP. Furthermore, neural response within the left inferior frontal gyrus (IFG), a region previously associated with cognitive interference, was reduced for females in the HP compared to LP group. Taken together, these results indicate that even temporarily heightening a person's sense of social power can increase their math performance, possibly by reducing cognitive interference during math performance. PMID:23390415

  20. Promotive and Corrosive Factors in African American Students' Math Beliefs and Achievement.

    PubMed

    Diemer, Matthew A; Marchand, Aixa D; McKellar, Sarah E; Malanchuk, Oksana

    2016-06-01

    Framed by expectancy-value theory (which posits that beliefs about and the subjective valuation of a domain predict achievement and decision-making in that domain), this study examined the relationships among teacher differential treatment and relevant math instruction on African American students' self-concept of math ability, math task value, and math achievement. These questions were examined by applying structural equation modeling to 618 African American youth (45.6 % female) followed from 7th to 11th grade in the Maryland Adolescent Development in Context Study. While controlling for gender and prior math achievement, relevant math instruction promoted and teacher differential treatment corroded students' math beliefs and achievement over time. Further, teacher discrimination undermined students' perceptions of their teachers, a mediating process under-examined in previous inquiry. These findings suggest policy and practice levers to narrow opportunity gaps, as well as foster math achievement and science, technology, engineering and math success.

  1. Trans-Aortic Counterpulsation: A Viable Alternative?

    PubMed Central

    Datt, Bharat; Hutchison, Lisa; Peniston, Charles

    2007-01-01

    Abstract: Transthoracic intra-aortic balloon pump (IABP) insertion has been a relatively rare and uncommon procedure. However, it is an established beneficial option in patients with severe peripheral vascular disease (PVD) accompanied with bi-lateral femoral arterial occlusion. There are several viable alternatives to trans-aortic IABP insertion, including trans-axillary or in abdominal aorta (requiring a laparotomy). Cardiac surgery has the advantage of an open sternum, facilitating effortless direct intraaortic balloon (IAB) insertion into the aorta. The IAB can be inserted either through a 9-mm graft or directly into the ascending aorta. During cardiac surgery, direct insertion into the ascending aorta with the balloon tip lying distally in the abdominal aorta is facilitated with an open sternum. The base of the balloon lies ∼2 cm below the left subclavian and can be confirmed through a trans-esophageal echocardiogram (TEE). Elimination of a graft insertion saves the team from time-consuming maneuvers and additional hemorrhagic complications. In our experience, postoperative vasoplegic syndrome coupled with myocardial edema contributed to patent instability and was treated with vasopressin and transthoracic IAB insertion. The CS 100 (Datascope Corp., Mahwah, NJ) console allowed the ability to time the balloon accurately. This case report details our experience with one such patient and establishes trans-aortic counter-pulsation as a safe and viable option in patients with severe PVD, where percutaneous insertion is precluded or has failed. PMID:17672190

  2. Powdered activated carbon adsorption of two fishy odorants in water: Trans,trans-2,4-heptadienal and trans,trans-2,4-decadienal.

    PubMed

    Li, Xin; Wang, Jun; Zhang, Xiaojian; Chen, Chao

    2015-06-01

    Powdered activated carbon (PAC) adsorption of two fishy odorants, trans,trans-2,4-heptadienal (HDE) and trans,trans-2,4-decadienal (DDE), was investigated. Both the pseudo first-order and the pseudo second-order kinetic models well described the kinetics curves, and DDE was more readily removed by PAC. In isotherm tests, both Freundlich and Modified Freundlich isotherms fitted the experimental data well. PAC exhibited a higher adsorption capacity for DDE than for HDE, which could be ascribed to the difference in their hydrophobicity. The calculated thermodynamic parameters (ΔG0, ΔH0, and ΔS0) indicated an exothermic and spontaneous adsorption process. PAC dosage, pH, and natural organic matter (NOM) presence were found to influence the adsorption process. With increasing PAC dosage, the pseudo first-order and pseudo second-order rate constants both increased. The value of pH had little influence on HDE or DDE molecules but altered the surface charge of PAC, and the maximum adsorption capacity occurred at pH9. The presence of NOM, especially the fraction with molecular weight less than 1k Dalton, hindered the adsorption. The study showed that preloaded NOM impaired the adsorption capacity of HDE or DDE more severely than simultaneously fed NOM did.

  3. The Engineered SVA Trans-mobilization Assay.

    PubMed

    Bock, Anja; Schumann, Gerald G

    2016-01-01

    Mammalian genomes harbor autonomous retrotransposons coding for the proteins required for their own mobilization, and nonautonomous retrotransposons, such as the human SVA element, which are transcribed but do not have any coding capacity. Mobilization of nonautonomous retrotransposons depends on the recruitment of the protein machinery encoded by autonomous retrotransposons. Here, we summarize the experimental details of SVA trans-mobilization assays which address multiple questions regarding the biology of both nonautonomous SVA elements and autonomous LINE-1 (L1) retrotransposons. The assay evaluates if and to what extent a noncoding SVA element is mobilized in trans by the L1-encoded protein machinery, the structural organization of the resulting marked de novo insertions, if they mimic endogenous SVA insertions and what the roles of individual domains of the nonautonomous retrotransposon for SVA mobilization are. Furthermore, the highly sensitive trans-mobilization assay can be used to verify the presence of otherwise barely detectable endogenously expressed functional L1 proteins via their marked SVA trans-mobilizing activity.

  4. Number-specific and general cognitive markers of preschoolers' math ability profiles.

    PubMed

    Gray, Sarah A; Reeve, Robert A

    2016-07-01

    Different number-specific and general cognitive markers have been claimed to underlie preschoolers' math ability. It is unclear, however, whether similar/different cognitive markers, or combinations of them, are associated with different patterns of emerging math abilities (i.e., different patterns of strength and weakness). To examine this question, 103 preschoolers (40-60 months of age) completed six math tasks (count sequence, object counting, give a number, naming numbers, ordinal relations, and arithmetic), three number-specific markers of math ability (dot enumeration, magnitude comparison, and spontaneous focusing on numerosity), and four general markers (working memory, response inhibition, attention, and vocabulary). A three-step latent profile modeling procedure identified five math ability profiles that differed in their patterns of math strengths and weaknesses; specifically, the profiles were characterized by (a) excellent math ability on all math tasks, (b) good arithmetic ability, (c) good math ability but relatively poor count sequence recitation ability, (d) average ability on all math tasks, and (e) poor ability on all math tasks. After controlling for age, only dot enumeration and spontaneous focusing on numerosity were associated with the math ability profiles, whereas vocabulary was also marginally significant, and these markers were differentially associated with different profiles; that is, different cognitive markers were associated with different patterns of strengths and weaknesses in math abilities. Findings are discussed in terms of their implications for the development of math cognition.

  5. Design of ET(B) receptor agonists: NMR spectroscopic and conformational studies of ET7-21[Leu7, Aib11, Cys(Acm)15].

    PubMed

    Hewage, Chandralal M; Jiang, Lu; Parkinson, John A; Ramage, Robert; Sadler, Ian H

    2002-03-01

    In a previous report we have shown that the endothelin-B receptor-selective linear endothelin peptide, ET-1[Cys (Acm)1,15, Ala3, Leu7, Aib11], folds into an alpha-helical conformation in a methanol-d3/water co-solvent [Hewage et al. (1998) FEBS Lett., 425, 234-238]. To study the requirements for the structure-activity relationships, truncated analogues of this peptide were subjected to further studies. Here we report the solution conformation of ET7-21[Leu7, Aib11, Cys(Acm)15], in a methanol-d3/water co-solvent at pH 3.6, by NMR spectroscopic and molecular modelling studies. Further truncation of this short peptide results in it displaying poor agonist activity. The modelled structure shows that the peptide folds into an alpha-helical conformation between residues Lys9-His16, whereas the C-terminus prefers no fixed conformation. This truncated linear endothelin analogue is pivotal for designing endothelin-B receptor agonists.

  6. Evidence for heterogeneity of astrocyte de-differentiation in vitro: astrocytes transform into intermediate precursor cells following induction of ACM from scratch-insulted astrocytes.

    PubMed

    Yang, Hao; Qian, Xin-Hong; Cong, Rui; Li, Jing-wen; Yao, Qin; Jiao, Xi-Ying; Ju, Gong; You, Si-Wei

    2010-04-01

    Our previous study definitely demonstrated that the mature astrocytes could undergo a de-differentiation process and further transform into pluripotential neural stem cells (NSCs), which might well arise from the effect of diffusible factors released from scratch-insulted astrocytes. However, these neurospheres passaged from one neurosphere-derived from de-differentiated astrocytes possessed a completely distinct characteristic in the differentiation behavior, namely heterogeneity of differentiation. The heterogeneity in cell differentiation has become a crucial but elusive issue. In this study, we show that purified astrocytes could de-differentiate into intermediate precursor cells (IPCs) with addition of scratch-insulted astrocyte-conditioned medium (ACM) to the culture, which can express NG2 and A2B5, the IPCs markers. Apart from the number of NG2(+) and A2B5(+) cells, the percentage of proliferative cells as labeled with BrdU progressively increased with prolonged culture period ranging from 1 to 10 days. Meanwhile, the protein level of A2B5 in cells also increased significantly. These results revealed that not all astrocytes could de-differentiate fully into NSCs directly when induced by ACM, rather they generated intermediate or more restricted precursor cells that might undergo progressive de-differentiation to generate NSCs.

  7. 76 FR 8726 - EasTrans, LLC; Notice of Filing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-15

    ... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF ENERGY Federal Energy Regulatory Commission EasTrans, LLC; Notice of Filing Take notice that on February 4, 2011, EasTrans, LLC (EasTrans) filed a revised Statement of Operating Conditions (SOC) reflecting...

  8. Quantitative Measurement of Trans-Fats by Infrared Spectroscopy

    ERIC Educational Resources Information Center

    Walker, Edward B.; Davies, Don R.; Campbell, Mike

    2007-01-01

    Trans-fat is a general term, which is mainly used to describe the various trans geometric isomers present in unsaturated fatty acids. Various techniques are now used for a quantitative measurement of the amount of trans-fats present in foods and cooking oil.

  9. Enterococcus faecium biofilm formation: identification of major autolysin AtlAEfm, associated Acm surface localization, and AtlAEfm-independent extracellular DNA Release.

    PubMed

    Paganelli, Fernanda L; Willems, Rob J L; Jansen, Pamela; Hendrickx, Antoni; Zhang, Xinglin; Bonten, Marc J M; Leavis, Helen L

    2013-04-16

    Enterococcus faecium is an important multidrug-resistant nosocomial pathogen causing biofilm-mediated infections in patients with medical devices. Insight into E. faecium biofilm pathogenesis is pivotal for the development of new strategies to prevent and treat these infections. In several bacteria, a major autolysin is essential for extracellular DNA (eDNA) release in the biofilm matrix, contributing to biofilm attachment and stability. In this study, we identified and functionally characterized the major autolysin of E. faecium E1162 by a bioinformatic genome screen followed by insertional gene disruption of six putative autolysin genes. Insertional inactivation of locus tag EfmE1162_2692 resulted in resistance to lysis, reduced eDNA release, deficient cell attachment, decreased biofilm, decreased cell wall hydrolysis, and significant chaining compared to that of the wild type. Therefore, locus tag EfmE1162_2692 was considered the major autolysin in E. faecium and renamed atlAEfm. In addition, AtlAEfm was implicated in cell surface exposure of Acm, a virulence factor in E. faecium, and thereby facilitates binding to collagen types I and IV. This is a novel feature of enterococcal autolysins not described previously. Furthermore, we identified (and localized) autolysin-independent DNA release in E. faecium that contributes to cell-cell interactions in the atlAEfm mutant and is important for cell separation. In conclusion, AtlAEfm is the major autolysin in E. faecium and contributes to biofilm stability and Acm localization, making AtlAEfm a promising target for treatment of E. faecium biofilm-mediated infections. IMPORTANCE Nosocomial infections caused by Enterococcus faecium have rapidly increased, and treatment options have become more limited. This is due not only to increasing resistance to antibiotics but also to biofilm-associated infections. DNA is released in biofilm matrix via cell lysis, caused by autolysin, and acts as a matrix stabilizer. In this study

  10. Introduction to Trans Australia Airlines CRM training

    NASA Technical Reports Server (NTRS)

    Davidson, Jim

    1987-01-01

    Trans Australia believes that its excellent accident rate record is due to a number of factors. It has a good group of standard operating procedures, and its crews are pretty well self-disciplined and adhere to those procedures. But the other thing that it believes is a factor in its safety record is that perhaps it is also due to its preparedness to be innovative, to keep up with what is going on in the rest of the world and, if it looks to have value, then to be amongst the first to try it out. Trans Australia commenced a program similar to Line Oriented Flight Training (LOFT) fairly early in 1979--that being its first windshear program-- which leads to why they are doing a course of resource management training, which we have chosen to call Aircrew Team Management (ATM). This course is detailed in another presentation.

  11. Trans fat bans and human freedom.

    PubMed

    Resnik, David

    2010-03-01

    A growing body of evidence has linked consumption of trans fatty acids to cardiovascular disease. To promote public health, numerous state and local governments in the United States have banned the use of artificial trans fats in restaurant foods, and additional bans may follow. Although these policies may have a positive impact on human health, they open the door to excessive government control over food, which could restrict dietary choices, interfere with cultural, ethnic, and religious traditions, and exacerbate socioeconomic inequalities. These slippery slope concerns cannot be dismissed as far-fetched, because the social and political pressures are place to induce additional food regulations. To protect human freedom and other values, policies that significantly restrict food choices, such as bans on types of food, should be adopted only when they are supported by substantial scientific evidence, and when policies that impose fewer restrictions on freedom, such as educational campaigns and product labeling, are likely to be ineffective.

  12. A meta-analysis of math performance in Turner syndrome

    PubMed Central

    Baker, Joseph M; Reiss, Allan L

    2015-01-01

    AIM Studies investigating the relationship between Turner syndrome and math learning disability have used a wide variation of tasks designed to test various aspects of mathematical competencies. Although these studies have revealed much about the math deficits common to Turner syndrome, their diversity makes comparisons between individual studies difficult. As a result, the consistency of outcomes among these diverse measures remains unknown. The overarching aim of this review is to provide a systematic meta-analysis of the differences in math and number performance between females with Turner syndrome and age-matched neurotypical peers. METHOD We provide a meta-analysis of behavioral performance in Turner syndrome relative to age-matched neurotypical populations on assessments of math and number aptitude. In total, 112 comparisons collected across 17 studies were included. RESULTS Although 54% of all statistical comparisons in our analyses failed to reject the null hypothesis, our results indicate that meaningful group differences exist on all comparisons except those that do not require explicit calculation. INTERPRETATION Taken together, these results help elucidate our current understanding of math and number weaknesses in Turner syndrome, while highlighting specific topics that require further investigation. PMID:26566693

  13. Modeling Trans-Scale Social Processes

    DTIC Science & Technology

    2010-05-01

    Topics • Limits of Empiricism • Radial Concepts • Generic Model of Social Action • Theory Templates – Trans-scale Social Coprocess (TSC) • Orientation...this presentation was supported, in part, by Office of Naval Research, Award No.: N00014-09-1-0766, project Modeling Strategic Contexts. Empiricism ...toward finer-grain, more dynamic models The Need for Social-Theoretical Models • The limits of empiricism – Recognized since Hume – Advances in

  14. Trans-ungual iontophoretic delivery of terbinafine.

    PubMed

    Nair, Anroop B; Vaka, Siva Ram K; Sammeta, Srinivasa M; Kim, Hyun D; Friden, Phillip M; Chakraborty, Bireswar; Murthy, S Narasimha

    2009-05-01

    Successful treatment of deep-seated nail infections remains elusive as the delivery of efficacious levels of antifungal drug to the site of action is very difficult. The aim of the present study was to attain rapid trans-ungual delivery of an antifungal agent, terbinafine, via the topical route using iontophoresis. Initial studies revealed that application of current (0.5 mA/cm(2)) could significantly enhance the trans-ungual delivery of terbinafine. An increase in the applied current or duration of current application enhanced the trans-ungual delivery of terbinafine. Permeation of terbinafine through the nail and drug load in the nail correlated well with the applied electrical dose. Release of drug from nails loaded using iontophoresis followed a two-phase release profile. Light microscopy studies substantiated the capability of iontophoresis to drive a charged molecule across the nail plate. The results of these studies indicate that iontophoresis could be developed as a potential technique for onychomycosis therapy.

  15. Solving Math Problems Approximately: A Developmental Perspective

    PubMed Central

    Ganor-Stern, Dana

    2016-01-01

    Although solving arithmetic problems approximately is an important skill in everyday life, little is known about the development of this skill. Past research has shown that when children are asked to solve multi-digit multiplication problems approximately, they provide estimates that are often very far from the exact answer. This is unfortunate as computation estimation is needed in many circumstances in daily life. The present study examined 4th graders, 6th graders and adults’ ability to estimate the results of arithmetic problems relative to a reference number. A developmental pattern was observed in accuracy, speed and strategy use. With age there was a general increase in speed, and an increase in accuracy mainly for trials in which the reference number was close to the exact answer. The children tended to use the sense of magnitude strategy, which does not involve any calculation but relies mainly on an intuitive coarse sense of magnitude, while the adults used the approximated calculation strategy which involves rounding and multiplication procedures, and relies to a greater extent on calculation skills and working memory resources. Importantly, the children were less accurate than the adults, but were well above chance level. In all age groups performance was enhanced when the reference number was smaller (vs. larger) than the exact answer and when it was far (vs. close) from it, suggesting the involvement of an approximate number system. The results suggest the existence of an intuitive sense of magnitude for the results of arithmetic problems that might help children and even adults with difficulties in math. The present findings are discussed in the context of past research reporting poor estimation skills among children, and the conditions that might allow using children estimation skills in an effective manner. PMID:27171224

  16. Structural, magnetic, and superconducting properties of pulsed-laser-deposition-grown <math>La1.85math> <math>Sr0.15math> <math>CuO4math> / <math>La2/3math> <math>Ca1/3math> <math>MnO3math> superlattices on (001)-oriented <math>LaSrAlO4math> substrates

    SciTech Connect

    Das, S.; Sen, K.; Marozau, I.; Uribe-Laverde, M. A.; Biskup, N.; Varela, M.; Khaydukov, Y.; Soltwedel, O.; Keller, T.; Döbeli, M.; Schneider, C. W.; Bernhard, C.

    2014-03-12

    Epitaxial <math>La1.85math> <math>Sr0.15math> <math>CuO4math> / <math>La2/3math> <math>Ca1/3math> <math>MnO3math> (LSCO/LCMO) superlattices (SL) on (001)- oriented LaSrAlO4 substrates have been grown with pulsed laser deposition (PLD) technique. Their structural, magnetic and superconducting properties have been determined with in-situ reflection high energy electron diffraction (RHEED), x-ray diffraction, specular neutron reflectometry, scanning transmission electron microscopy (STEM), electric transport, and magnetization measurements. We find that despite the large mismatch between the in-plane lattice parameters of LSCO (a = 0.3779 nm) and LCMO (a = 0.387 nm) these superlattices can be grown epitaxially and with a high crystalline quality. While the first LSCO layer remains clamped to the LSAO substrate, a sizeable strain relaxation occurs already in the first LCMO layer. The following LSCO and LCMO layers adopt a nearly balanced state in which the tensile and compressive strain effects yield alternating in-plane lattice parameters with an almost constant average value. No major defects are observed in the LSCO layers, while a significant number of vertical antiphase boundaries are found in the LCMO layers. The LSCO layers remain superconducting with a relatively high superconducting onset temperature of Tconset ≈ 36 K. The macroscopic superconducting response is also evident in the magnetization data due to a weak diamagnetic signal below 10 K for H ∥ ab and a sizeable paramagnetic shift for H ∥ c that can be explained in terms of a vortex-pinning-induced flux compression. The LCMO layers maintain a

  17. Preschool children's mathematical knowledge: The effect of teacher "math talk.".

    PubMed

    Klibanoff, Raquel S; Levine, Susan C; Huttenlocher, Janellen; Vasilyeva, Marina; Hedges, Larry V

    2006-01-01

    This study examined the relation between the amount of mathematical input in the speech of preschool or day-care teachers and the growth of children's conventional mathematical knowledge over the school year. Three main findings emerged. First, there were marked individual differences in children's conventional mathematical knowledge by 4 years of age that were associated with socioeconomic status. Second, there were dramatic differences in the amount of math-related talk teachers provided. Third, and most important, the amount of teachers' math-related talk was significantly related to the growth of preschoolers' conventional mathematical knowledge over the school year but was unrelated to their math knowledge at the start of the school year.

  18. Social Cognitive Factors, Support, and Engagement: Early Adolescents' Math Interests as Precursors to Choice of Career

    ERIC Educational Resources Information Center

    Rowan-Kenyon, Heather T.; Swan, Amy K.; Creager, Marie F.

    2012-01-01

    The authors examined the central hypothesis that students' early perceptions of support and sense of engagement in math classes and math activities strongly influence the broadening or narrowing of their math interest. The focus was on the first wave of qualitative data collected from 5th-, 7th-, and 9th-grade students during the 2007-2008…

  19. Supporting Early Math--Rationales and Requirements for High Quality Software

    ERIC Educational Resources Information Center

    Haake, Magnus; Husain, Layla; Gulz, Agneta

    2015-01-01

    There is substantial evidence that preschooler's performance in early math is highly correlated to math performance throughout school as well as academic skills in general. One way to help children attain early math skills is by using targeted educational software and the paper discusses potential gains of using such software to support early math…

  20. Differentiated Instruction for K-8 Math and Science: Activities and Lesson Plans

    ERIC Educational Resources Information Center

    Hamm, Mary; Adams, Dennis

    2008-01-01

    This book offers practical recommendations to reach every student in a K-8 classroom. Research-based and written in a teacher-friendly style, it will help teachers with classroom organization and lesson planning in math and science. Included are math and science games, activities, ideas, and lesson plans based on the math and science standards.…

  1. A Call for Collaborative Research To Investigate the "Indian Math" Problem.

    ERIC Educational Resources Information Center

    Hankes, Judith Elaine

    Two studies appear to reach unsatisfactory conclusions regarding causes of low math achievement among American Indians. Leap (1988) studied math problem-solving strategies among low-math-achieving fourth- and fifth-grade Ute reservation students. He concluded that faulty or cumbersome problem-solving strategies were directly linked to Ute language…

  2. A Case Study of Computer Gaming for Math: Engaged Learning from Gameplay?

    ERIC Educational Resources Information Center

    Ke, Fengfeng

    2008-01-01

    Employing mixed-method approach, this case study examined the in situ use of educational computer games in a summer math program to facilitate 4th and 5th graders' cognitive math achievement, metacognitive awareness, and positive attitudes toward math learning. The results indicated that students developed more positive attitudes toward math…

  3. How a Networked Improvement Community Improved Success Rates for Struggling College Math Students. Improvement Vignette

    ERIC Educational Resources Information Center

    Carnegie Foundation for the Advancement of Teaching, 2017

    2017-01-01

    The Carnegie Foundation launched its Math Pathways initiative nearly six years ago at 29 colleges across the country with the aim of improving success rates in developmental math. Tens of thousands of students a year, who need additional preparation for college-level math, are shut out of earning degrees and fulfilling careers due to the huge…

  4. Beginning School Math Competence: Minority and Majority Comparisons. Report No. 34.

    ERIC Educational Resources Information Center

    Entwisle, Doris R.; Alexander, Karl L.

    This paper uses a structural model with a large random sample of urban children to explain children's competence in math concepts and computation at the time they begin first grade. These two aspects of math ability respond differently to environmental resources, with math concepts much more responsive to family factors before formal schooling…

  5. Solving Behavior Problems in Math Class: Academic, Learning, Social, and Emotional Empowerment (Grades K-12)

    ERIC Educational Resources Information Center

    Taylor-Cox, Jennifer

    2011-01-01

    Reduce the number of discipline issues that arise in your math classroom with ideas from math education expert Jennifer Taylor-Cox. In this book, you'll learn a variety of ways to handle disruptive, disinterested, avoidant, and/or disrespectful students in K-12 math classrooms. Using realistic, case-by-case examples, the author reveals practical…

  6. The Relative Value of Growth in Math Fact Skills across Late Elementary and Middle School

    ERIC Educational Resources Information Center

    Nelson, Peter M.; Parker, David C.; Zaslofsky, Anne F.

    2016-01-01

    The purpose of the current study was to evaluate the importance of growth in math fact skills within the context of overall math proficiency. Data for 1,493 elementary and middle school students were included for analysis. Regression models were fit to examine the relative value of math fact fluency growth, prior state test performance, and a fall…

  7. How Do Teachers' Beliefs Predict Children's Interest in Math from Kindergarten to Sixth Grade?

    ERIC Educational Resources Information Center

    Upadyaya, Katja; Eccles, Jacquelynne S.

    2014-01-01

    The present study investigated to what extent teachers' beliefs about children's achievement contribute to the development of children's math interest. In addition, the extent to which other possible predictors, such as performance in math, gender, and race/ethnicity would contribute to the development of children's math interest was examined.…

  8. The Effect of an Educator's Teaching Style on the Math Anxiety of Adult Learners

    ERIC Educational Resources Information Center

    Hosch, Mary L.

    2014-01-01

    Many adults are obstructed from specialized professions based on their anxiety of math. Math anxiety has been extensively researched for over 3 decades. Scholars have attempted to define its origins as well as the means to eliminate its often-debilitating effect on learners. Research indicates that learners with math anxiety often give up career…

  9. Using Computer-Assisted Instruction to Build Math Fact Fluency: An Implementation Guide

    ERIC Educational Resources Information Center

    Hawkins, Renee O.; Collins, Tai; Hernan, Colleen; Flowers, Emily

    2017-01-01

    Research findings support the use of computer-assisted instruction (CAI) as a curriculum supplement for improving math skills, including math fact fluency. There are a number of websites and mobile applications (i.e., apps) designed to build students' math fact fluency, but the options can become overwhelming. This article provides implementation…

  10. The Groove of Growth: How Early Gains in Math Ability Influence Adolescent Achievement

    ERIC Educational Resources Information Center

    Watts, Tyler W.; Duncan, Greg J.; Siegler, Robert S.; Davis-Kean, Pamela E.

    2014-01-01

    A number of studies, both small scale and of nationally-representative student samples, have reported substantial associations between school entry math ability and later elementary school achievement. However, questions remain regarding the persistence of the association between early growth in math ability and later math achievement due to the…

  11. Singapore Math®. What Works Clearinghouse Intervention Report. Updated December 2015

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2015

    2015-01-01

    This report on "Singapore Math®" updates the 2009 WWC review of the curriculum to include seven new studies. Despite the additional research, no studies meet WWC design standards and therefore, no conclusions can be made about the effectiveness of "Singapore Math®." [For the 2009 report, "Singapore Math," see…

  12. The Use and Effectiveness of a Targeted Math Intervention for Third Graders

    ERIC Educational Resources Information Center

    Pool, Juli L.; Carter, Gabriel M.; Johnson, Evelyn S.; Carter, Deborah R.

    2013-01-01

    Students who fail to develop proficiency in math skills in the primary grades are more likely to experience difficulties in the math curriculum later on. These students may be in need of a more targeted intervention, or Tier 2 supports, in mathematic instruction. Although the instructional principles of an effective math intervention are becoming…

  13. Language of Physics, Language of Math: Disciplinary Culture and Dynamic Epistemology

    ERIC Educational Resources Information Center

    Redish, Edward F.; Kuo, Eric

    2015-01-01

    Mathematics is a critical part of much scientific research. Physics in particular weaves math extensively into its instruction beginning in high school. Despite much research on the learning of both physics and math, the problem of how to effectively include math in physics in a way that reaches most students remains unsolved. In this paper, we…

  14. 78 FR 18326 - Agency Information Collection Activities; Comment Request; Upward Bound and Upward Bound Math...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-26

    ... Agency Information Collection Activities; Comment Request; Upward Bound and Upward Bound Math Science... Upward Bound Math Science Annual Performance Report. OMB Control Number: 1840-NEW. Type of Review: New... under the regular Upward Bound (UB) and Upward Bound Math and Science (UBMS) Programs. The Department...

  15. The Effects of Dynamic Strategic Math on English Language Learners' Word Problem Solving

    ERIC Educational Resources Information Center

    Orosco, Michael J.; Swanson, H. Lee; O'Connor, Rollanda; Lussier, Cathy

    2013-01-01

    English language learners (ELLs) struggle with solving word problems for a number of reasons beyond math procedures or calculation challenges. As a result, ELLs may not only need math support but also reading and linguistic support. The purpose of this study was to assess the effectiveness of a math comprehension strategy called Dynamic Strategic…

  16. Upward Bound Math-Science: Program Description and Interim Impact Estimates

    ERIC Educational Resources Information Center

    Olsen, Robert; Seftor, Neil; Silva, Tim; Myers, David; DesRoches, David; Young, Julie

    2007-01-01

    To help address continuing disparities in academic achievement and under-representation of disadvantaged groups in math and science majors and careers, the U.S. Department of Education (ED) established a math and science initiative in 1990 within Upward Bound, a federal grant program known as Upward Bound Math-Science (UBMS) designed to provide…

  17. The Contribution of Memory and Anxiety to the Math Performance of College Students with Learning Disabilities

    ERIC Educational Resources Information Center

    Prevatt, Frances; Welles, Theresa L.; Li, Huijun; Proctor, Briley

    2010-01-01

    The impact of memory and anxiety on math performance was analyzed in a sample of 115 college undergraduates, all of whom had a diagnosed learning disability. The direct effects of memory and anxiety on math performance were first examined, followed by an examination of whether anxiety moderates the relationship between memory and math. Both memory…

  18. Assessing the Effect of Language Demand in Bundles of Math Word Problems

    ERIC Educational Resources Information Center

    Banks, Kathleen; Jeddeeni, Ahmad; Walker, Cindy M.

    2016-01-01

    Differential bundle functioning (DBF) analyses were conducted to determine whether seventh and eighth grade second language learners (SLLs) had lower probabilities of answering bundles of math word problems correctly that had heavy language demands, when compared to non-SLLs of equal math proficiency. Math word problems on each of four test forms…

  19. Comparative Study of the National Math Curriculum with Curricula from Four Nations

    ERIC Educational Resources Information Center

    Wilms, Ulrich Heinz

    2011-01-01

    The formation of the Common Core State Standards can be regarded as the predecessor of a national curriculum. This research addresses how the proposed national math curriculum compares to the math curricula of a sample of peer-nations (Singapore, Netherlands, Germany, and Japan) with high student achievement rates in math, while relating the math…

  20. Does Watching "Do the Math" Affect Self-Efficacy and Achievement in Mathematics?

    ERIC Educational Resources Information Center

    Cavazos, Blanca Guadalupe

    2014-01-01

    "Do The Math," a 1-hour, live, educational television program provides on-air instruction in general math, geometry, pre-algebra and algebra to a target audience of 4th-12th graders. A team of math teachers also provides tutoring to students who call in for help with homework. The purpose of this study was to investigate whether watching…

  1. Examining Relationships among Assessment Scores and Math Coursework in an Urban School District

    ERIC Educational Resources Information Center

    Parke, Carol S.

    2012-01-01

    This study investigates relationships between assessment scores and other indicators of math performance. The impetus for the research came from a district's need to better understand high school math achievement. Longitudinal data for a cohort of students were obtained, including math scores from their state assessment, TerraNova, and New…

  2. Social Cognitive Predictors of Mexican American High School Students' Math/Science Career Goals

    ERIC Educational Resources Information Center

    Garriott, Patton O.; Raque-Bogdan, Trisha L.; Zoma, Lorrine; Mackie-Hernandez, Dylan; Lavin, Kelly

    2017-01-01

    This study tested a social cognitive model of math/science career goals in a sample (N = 258) of Mexican American high school students. Familism and proximal family supports for math/science careers were examined as predictors of math/science: performance accomplishments, self-efficacy, interests, and goals. Results showed that the hypothesized…

  3. Multiply Your Child's Success: Math and Science Can Make Dreams Come True. A Parent's Guide

    ERIC Educational Resources Information Center

    National Math and Science Initiative, 2012

    2012-01-01

    In today's high-tech world, math and science matter. Of the 10 fastest growing occupations, eight are science, math or technology-related. Whatever a child wants to do--join the military, join the workforce, or go on to college--math and science skills will be important. Become part of the equation to help one's child succeed now and in the…

  4. Preliminary Success and Retention Rates in Selected Math Courses. Research Report.

    ERIC Educational Resources Information Center

    Cuesta Coll., San Luis Obispo, CA. Matriculation and Research Services.

    This report presents findings of exploratory research on success, retention, and persistence in math courses at Cuesta College. The following research questions were addressed: (1) How do success rates in Math 23 (elementary algebra) and Math 27 (intermediate algebra) compare with traditional and computer-assisted formats? (2) What are the…

  5. Shake, Rattle, & Roll: Teaching Guide & Poster. Expect the Unexpected with Math[R

    ERIC Educational Resources Information Center

    Actuarial Foundation, 2013

    2013-01-01

    "Shake, Rattle, & Roll" is a new program developed by The Actuarial Foundation with Scholastic, provides dynamic real-world math content designed to build student skills while showing students the relevance of math to understanding their world and planning for their future. Math skills are increasingly important for students. According to the U.S.…

  6. Word-Problem-Solving Strategy for Minority Students at Risk for Math Difficulties

    ERIC Educational Resources Information Center

    Kong, Jennifer E.; Orosco, Michael J.

    2016-01-01

    Minority students at risk for math difficulties (MD) struggle with word problems for various reasons beyond procedural or calculation challenges. As a result, these students require support in reading and language development in addition to math. The purpose of this study was to assess the effectiveness of a math comprehension strategy based on a…

  7. How Are Community College Students Assessed and Placed in Developmental Math? Grounding Our Understanding in Reality

    ERIC Educational Resources Information Center

    Melguizo, Tatiana; Kosiewicz, Holly; Prather, George; Bos, Johannes

    2014-01-01

    The study's main objective was to provide a detailed description of math Assessment and Placement (A&P) policies in the Los Angeles Community College District (LACCD). The study was focused on math because a larger proportion of students place into remedial math than remedial reading or English (Bailey, Jeong, & Cho, 2010; Parsad, Lewis,…

  8. Why Students Do Not Prepare for Math Placement Exams: Student Perspectives. CCRC Research Brief. Number 57

    ERIC Educational Resources Information Center

    Fay, Maggie P.; Bickerstaff, Susan; Hodara, Michelle

    2013-01-01

    Drawn from surveys completed by 122 students enrolled in developmental math at four community colleges and from seven student focus groups with a total of 34 developmental math students at those same colleges, this research brief illuminates student experiences with and perspectives on the math assessment and placement process. Findings suggest…

  9. SRA Real Math Building Blocks PreK. What Works Clearinghouse Intervention Report

    ERIC Educational Resources Information Center

    What Works Clearinghouse, 2007

    2007-01-01

    "SRA Real Math Building Blocks PreK" (also referred to as "Building Blocks for Math") is a supplemental mathematics curriculum designed to develop preschool children's early mathematical knowledge through various individual and small- and large-group activities. It uses "Building Blocks for Math PreK" software,…

  10. Enhancing Motivation to Complete Math Tasks Using the High-Preference Strategy

    ERIC Educational Resources Information Center

    Banda, Devender R.; Matuszny, Rose Marie; Therrien, William J.

    2009-01-01

    Designed to enhance the completion of math tasks, high-preference strategy consists of presenting math tasks that students prefer, to enhance their interest in completing difficult math tasks. In this article, a brief review of the literature related to the use of the high-preference strategy is provided along with directions on how to implement…

  11. Math Remediation for the College Bound Workbook: Homework, Sample Tests, and Answer Keys

    ERIC Educational Resources Information Center

    Khatri, Daryao

    2011-01-01

    Algebra is the language that must be mastered for any course that uses math because it is the gateway for entry into any science, technology, engineering, and mathematics (STEM) discipline. "Math Remediation for the College Bound" fosters mastery of critical math and algebraic concepts and skills essential to all of the STEM disciplines and some…

  12. Attributional Gender Bias: Teachers' Ability and Effort Explanations for Students' Math Performance

    ERIC Educational Resources Information Center

    Espinoza, Penelope; Arêas da Luz Fontes, Ana B.; Arms-Chavez, Clarissa J.

    2014-01-01

    Research is presented on the attributional gender bias: the tendency to generate different attributions (explanations) for female versus male students' performance in math. Whereas boys' successes in math are attributed to ability, girls' successes are attributed to effort; conversely, boys' failures in math are attributed to a…

  13. Sex Differences in the Relation between Math Performance, Spatial Skills, and Attitudes

    ERIC Educational Resources Information Center

    Ganley, Colleen M.; Vasilyeva, Marina

    2011-01-01

    Sex differences have been previously found in cognitive and affective predictors of math achievement, including spatial skills and math attitudes. It is important to determine whether there are sex differences not only in the predictors themselves, but also in the nature of their relation to math achievement. The present paper examined spatial…

  14. Smith college secondary math and science outreach program

    SciTech Connect

    Powell, J.A.; Clark, C.

    1994-12-31

    The Smith College Secondary Math and Science Outreach Program works collaboratively with front-line educators to encourage young women students of all abilities, especially underrepresented and underserved minorities, to continue studying math and science throughout high school. The program includes three main components: (1) Twenty-five to thirty teams of math/science teachers and guidance counselors participate in a year-long program which begins with a three-day Current Students/Future Scientists and Engineering Workshop. This event includes a keynote address, presentations and workshops by successful women in science and engineering, and hands-on laboratory sessions. Each participant receives a stipend and free room and board. Returning to their schools, the teacher-counselor teams implement ongoing plans designed to counteract gender bias in the sciences and to alert female students to the broad range of math, science, and engineering career choices open to them. A follow-up session in the spring allows the teams to present and discuss their year-long activities. (2) TRI-ON, a day of science for 120 ninth- and tenth- grade girls from schools with a large underserved and underrepresented population, is held in early spring. Girls discover the excitement of laboratory investigation and interact with female college science and math majors. (3) Teaching Internships, initiated in 1991, involve ten to fifteen Smith College math and science majors in teaching in public schools. The teaching interns experience the rewards and challenges of classroom teaching, and they also serve as role models for younger students.

  15. PRECISE LABORATORY MEASUREMENTS OF TRANS-DCOOH AND TRANS-HCOOD FOR ASTROPHYSICAL OBSERVATIONS

    SciTech Connect

    Cazzoli, Gabriele; Puzzarini, Cristina; Stopkowicz, Stella; Gauss, Juergen

    2011-09-01

    The rotational spectra of the mono-deuterated isotopologues of trans-formic acid, trans-DCOOH and trans-HCOOD, were investigated. In the millimeter- and submillimeter-wave frequency regions the Lamb-dip technique was exploited to obtain sub-Doppler resolution and to resolve the hyperfine structure due to the deuterium and hydrogen nuclei, thus enabling the accurate determination of the corresponding hyperfine constants. The experimental determination was supported by high-level quantum-chemical calculations at the coupled-cluster level of theory using large atomic-orbital basis sets. The Lamb-dip measurements were also supplemented by THz Doppler-limited measurements in order to extend the predictive capability of the available spectroscopic parameters to higher frequencies.

  16. Buoys and Springs - Building Connections Between Math and Physics

    NASA Astrophysics Data System (ADS)

    Tenhoff, Amanda C.; Gerenz, Adam J.; Jalkio, Jeffrey A.

    2016-12-01

    Students often tend to compartmentalize material learned in school. While we see this phenomenon within our own classes, it is even more apparent that students have difficulty making connections between their math and physics courses. We believe that hands-on experiments are particularly useful in helping students make these connections. In this paper we present several possible experiments that use buoyancy to help students grasp both the similarities between different forces and the physical interpretation of the integration and differentiation techniques learned in their math classes. These experiments can also be used to introduce computational methods and 3D printing.

  17. Custom skiing and trekking adaptations for a trans-tibial and trans-radial quadrilateral amputee.

    PubMed

    Farley, R; Mitchell, F; Griffiths, M

    2004-04-01

    A keen skier who is a trans-tibial and trans-radial quadrilateral amputee sought an improved adaptation for skiing from the Rehabilitation Engineering Service in Edinburgh. The unpredictable nature of the bending moments and loads that can be imposed on the prostheses during skiing raised concern about the suitability of standard prosthetic components for this purpose. The authors report a ski boot modification that incorporates mechanical protection for the standard prosthetic components and a description of the custom-adapted alpine trekking sticks used also as ski poles. Reference is made to the role of risk assessment, the design and manufacture in providing this type of custom-made rehabilitation device.

  18. Late Paleocene-Early Eocene diatoms and dinocysts from biosiliceous facies of the middle Trans-Urals region

    NASA Astrophysics Data System (ADS)

    Aleksandrova, G. N.; Oreshkina, T. V.; Iakovleva, A. I.; Radionova, E. P.

    2012-07-01

    The Paleocene-Eocene transition is one of the most remarkable Cenozoic periods coinciding with the global thermal maximum (PETM). Based on the complex biostratigraphic analysis of diatoms, silicoflagellates, and dinocysts, this global event is revealed in three sections of the Middle Trans-Urals region (Kamyshlov, Korkino, Chumlyak) represented by marine biosiliceous sediments of the Serov and Irbit formations. The interval of the Trinacra ventriculosa-Hemiaulus proteus-Coscinodiscus uralensis diatom zones is marked by the appearance of new genera Moisseevia, Solium, Fenestrella, Craspedodiscus, Podosira, Pseudotriceratium, intense radiations of Grunoweiella and Coscinodiscus, and development of extreme morphotypes among silicoflagellates. The defined diatom assemblages differ slightly from their coeval counterparts from the Middle Volga region, which casts doubt upon the assumed stable water exchange between these basins. On the contrary, the dinocyst assemblages are lacking zonal index species ( Appectodinium homomorphum, A. augustum) and Apectodinium acme characteristic of the transitional Paleocene-Eocene strata in many worldwide localities. The facies settings of his period with intense vertical mixing and relatively low temperatures and salinity are characterized by the dominant role of dinocysts belonging to the genera Areoligera, Deflandrea, Spiniferites, and Operculodinium.

  19. trans-trans Conjugated linoleic acid enriched soybean oil reduces fatty liver and lowers serum cholesterol in obese zucker rats.

    PubMed

    Gilbert, William; Gadang, Vidya; Proctor, Andrew; Jain, Vishal; Devareddy, Latha

    2011-10-01

    Conjugated linoleic acid (CLA) is a collection of octadecadienoic fatty acids that have been shown to possess numerous health benefits. The CLA used in our study was produced by the photoisomerization of soybean oil and consists of about 20% CLA; this CLA consists of 75% trans-trans (a mixture of t8,t10; t9,t11; t10,t12) isomers. This method could be readily used to increase the CLA content of all soybean oil used as a food ingredient. The objective of this study was to determine the effects of trans-trans CLA-rich soy oil, fed as a dietary supplement, on body composition, dyslipidemia, hepatic steatosis, and markers of glucose control and liver function of obese fa/fa Zucker rats. The trans-trans CLA-rich soy oil lowered the serum cholesterol and low density lipoprotein-cholesterol levels by 41 and 50%, respectively, when compared to obese controls. Trans-trans CLA-rich soy oil supplementation also lowered the liver lipid content significantly (P < 0.05) with a concomitant decrease in the liver weight in the obese rats. In addition, glycated hemoglobin values were improved in the group receiving CLA-enriched soybean oil in comparison to the obese control. PPAR-γ expression in white adipose tissue was unchanged. In conclusion, trans-trans CLA-rich soy oil was effective in lowering total liver lipids and serum cholesterol.

  20. Effect of Video Assisted Instruction on Parent, Teacher and Student Perceptions of a Quality 5th Grade Math Program

    ERIC Educational Resources Information Center

    Mayes, Donald Roy

    2010-01-01

    This research has been conducted in response to struggling math students and parents who become frustrated while trying to help their student at home. A need remains for a treatment that can increase math success and lower the anxiety level associated with math. The rationale for this research is an attempt to increase students' math success by…