青少年篮球队员投篮稳定性的研究

对青少年篮球队员投篮稳定性的影响主要有心理因素和技术因素,对前者可采取程序训练法和情绪调控训练来加以改善;对后者则需要抓好投篮技术动作、提高投篮技术动作的动力定型、提高技战术组合能力。     

Advanced Mathematical Thinking in a Technological Workplace

This paper examines the use ofmathematics in a computer aided design andmanufacture setting. It reports on a casestudy which focuses on technicians'calculations of the internal volume ofmoulds they produce for glass factories. Itexamines the mathematics the techniciansuse, whether this mathematics is related toschool mathematics, how the techniciansunderstand this mathematics and the role oftechnology in the technicians'mathematics-related problem solvingactivities. Saxe's four-parameter modelforms a background for discussingobservations. Although the technicians didnot consider their activity was related to(school) mathematics there is evidence thatin making sense of their practice theyresorted to (a form of) school mathematics.The role of technology in technicians'mathematical activity was crucial: not onlywere the mathematical procedures they usedshaped by the technology they used but themathematics was a means to achievetechnological results. Further to this themathematics employed by the techniciansmust be interpreted within thegoal-oriented behaviour of workers who`live' the imperatives and constraints ofthe factory's production activity cycle. This revised version was published online in August 2006 with corrections to the Cover Date.     

The Gender Question and the Study of Jewish Children

Although some researchers argue that a generation of feminist innovations and changes in American Jewish life has produced an egalitarian generation in which gender differences among Jewish children and adolescents are insignificant, this article argues that the salience of gender differences is a factor of the kinds of questions that children are asked by researchers. When the question of gender was explicitly posed to 67 Jewish children, subtle differences did emerge. Jewish girls were found to be more sensitive to issues of equal rights and sexism, more ambivalent about their proper roles, and more aware of the contributions of Jewish women than boys.     

An Ecological Approach to a University Course that Develops Partnerships Impacting Health and Wellness in K-12 Schools and Communities

Over the past several decades, there has been an increased focus on health promotion as opposed to individual health determinants and disease prevention. Given the association between health and academic success, health promotion is a vastly overlooked lever for establishing effective K-12 schools. Student, organizational, and community well-being are intricately linked, and thus, focusing on any one of these alone will not eliminate achievement gaps and health disparities. We assert that university–community collaboration is instrumental in promoting student and family well-being. Moreover, employing an ecological systems lens to inform partnership and health promotion practices facilitates collective action and magnifies results. In this article, we describe the philosophical and theoretical orientations that guide our teaching, service, and scholarship. We explain how a university undergraduate course that utilizes service-learning has leveraged theory to build university–community collaboration. Using illustrative examples of several service-learning projects, we show how an ecological systems orientation has enhanced the course; supported a systemic approach to health promotion in schools and communities; and facilitated strategic, mutual, and sustained partnerships. We conclude by highlighting the implications of an ecological approach to university–community collaboration, including organizational capacity building, implementation of evidence-based practices, and the need to enhance preservice teacher education.     

Examining Hispanic Student Mathematics Performance on High-Stakes Tests: An Examination of One Urban School District in Colorado

Hispanic students, born both inside and outside the United States, comprise over 80% of the US English language learner population. The difference in mathematics achievement among Hispanic students and other populations has been well documented. As a result, it is important to understand the effects of using standards-based mathematics curriculum with high school Hispanic students. Mathematics achievement scores from the Colorado Student Assessment Program and Measurement of Academic Progress for Hispanic 9th and 10th grade students (n = 1,318) who used the Core-Plus Mathematics Program were compared to the progress of other student demographics (n = 2,003) who used the same curriculum. In following the recommendations of the National Research Council (On evaluation curricular effectiveness: judging the effectiveness of K-12 mathematics evaluations. National Academies Press, Washington, DC 2005), a meta-analysis (Glass in Educ Res 5:3–8, 1976) of Hispanic students using National Science Foundation Funded (NSFF) curricula was conducted to contextualize this study’s findings within the findings of previous studies. The results of this study indicated that Hispanic students have shown modest gains; however, their relative position compared to other ethnic groups is unremarkable. The meta-analysis Cohen’s d results ranged from +.673 (SE = .131) to −.670 (SE = .045) with slightly positive effects for Hispanic students using an NSFF curriculum when compared to those not using an NSFF curriculum (.043, SE = .012).