Israel's Role in Diaspora Jewish Education

What will the supplementary school be like in 1990? Here are some unhedged predictions, and our reasons for them.     

A cervical spine model to predict injury scenarios and clinical instability

A complete and detailed three-dimensional finite element model of the human cervical spine (C1–C7), including soft and hard tissues, was created using a digitized geometric measurement tool. The model was validated against existing experimental studies in flexion, extension, lateral bending, and axial rotation. The aims of this study were to use the model to simulate the mechanisms of injury scenarios, such as diving and football accidents, and to correlate the external and internal responses of the spinal components to disc herniation and clinical instability. It was determined that a shear-generated flexion moment of about 10 Nm or a compression-flexion load of 450 N would generate significant stresses and strains in the discs, together with sufficient posterior-anterior displacement and rotational angulation of the vertebrae, to place the mid and lower cervical spine at risk of clinical instability or disc herniation. The results revealed that the location of the maximum stresses in the discs could not be directly correlated with the type of loads. In addition, for the loadings considered, the maximum displacement of the spine could be reduced by as much as 50% when the restraint of the cervical spine is changed from a C7–T1 to C7–T1 and C1–C2 fixed conditions.     

Gender Differences in Children's Throwing Performance: Biology and Environment

Abstract

This study evaluated the influence of biological and environmental variables on the differences between the throwing performance of 5-year-old girls and boys. A total of 100 children (48 girls, 52 boys) were tested on throwing for distance and rated on two components of throwing form—trunk rotation, and foot action. Children were evaluated on eight biological characteristics—height, weight, body mass index, ponderal index, sum of four skinfolds, body diameters, arm and leg girths, and somatotypes—and four environmental characteristics—older brother, older sister, presence of adult male, and playing with older children. Results indicated that boys threw farther than girls and exhibited more mature form. Boys had greater joint diameters than girls, a smaller sum of four skinfolds, and more estimated arm muscle. Boys were more likely to play regularly with older children. Girls' throwing performance was only 57% that of boys, but when throwing was adjusted for a linear composite of biological variables, girls' throwing performance increased to 69% of boys'. Thus, while the differences in most motor performance tasks between boys and girls prior to puberty have been attributed to environmental factors, some of the differences in throwing performance appears to reflect biological characteristics, even as early as 5 years of age.     

Making sense of power relations in a Malaysian English-as-a-second-language academic writing classroom

The role of power in an English-as-a-second-language classroom has yet to be fully explored by an action research practitioner, especially in a Malaysian higher education setting. This study aims to contribute to this gap by working within an academic literacies perspective to teaching academic writing, which propagates the understanding of power-relational, socio-cultural and epistemological conditions for effective teaching and learning. As the teacher in this classroom, I focus on how power-relational conditions play out. To activate the power conditions, I used a teaching principle in Teaching English to Speakers of Other Languages (TESOL)-negotiated interaction to reduce power-based mismatches between participants in a teaching or learning relationship in my classroom, drawing upon Kumaravadivelu’s work on post-method pedagogy for TESOL; that is, not being bound by any specific method of teaching. In analysing the different types of power that were operational in my classroom, wider implications of power that operate beyond the classroom level and how they impacted teaching and learning decisions were found to be highly illuminating. The action research methodology used for this study enabled me to reflect critically on my detailed diary recordings and student letter and interview collections, which in turn impacted on my teaching decisions as each teaching cycle was completed. My reflections also help shape my evolving identity as a teacher-researcher throughout this ongoing Malaysian action research journey.     

Short lesson plan associated with increased acceptance of evolutionary theory and potential change in three alternate conceptions of macroevolution in undergraduate students

Undergraduates commonly harbor alternate conceptions about evolutionary biology; these alternate conceptions often persist, even after intensive instruction, and may influence acceptance of evolution. We interviewed undergraduates to explore their alternate conceptions about macroevolutionary patterns and designed a 2-h lesson plan to present evidence that life has evolved. We identified three alternate conceptions during our interviews: that newly derived traits would be more widespread in extant species than would be ancestral traits, that evolution proceeds solely by anagenesis, and that lineages must become more complex over time. We also attempted to measure changes in the alternate conceptions and levels of acceptance of evolutionary theory in biology majors and nonmajors after exposure to the lesson plan. The instrument used to assess understanding had flaws, but our results are suggestive of mixed effects: we found a reduction in the first alternate conception, no change in the second, and reinforcement of the third. We found a small, but significant, increase in undergraduate acceptance of evolutionary theory in two trials of the lesson plan (Cohen's d effect sizes of 0.51 and 0.19). These mixed results offer guidance on how to improve the lesson and show the potential of instructional approaches for influencing acceptance of evolution.     

The effect of an historical perspective on prospective teachers’ beliefs in learning mathematics

Many learners hold traditional beliefs about mathematics that can hamper their learning in the discipline. To address this issue, a “history-based” intervention program entailing problem-solving and writing activities that instigate cognitive conflict was implemented. Data sources were pretest and posttest scores of a 12-theme questionnaire designed for this study called “Prospective teachers’ beliefs questionnaire about mathematics learning” and written reflections of prospective teachers. The survey of the prospective teachers beliefs related to the nature of mathematics and the way it is learned, taught, and practiced showed a great majority of them failed to hold progressive beliefs. Fortunately, the intervention program has helped the prospective teachers revise and correct their beliefs, thoughts, and understandings. Study of the prospective teachers’ written reflections and observations of their oral presentations during whole-class discussions strengthen the results of the quantitative study.     

Taking the Next Step: Ways Forward for Coaching Science

Coaching is no longer a subset of physical education or sport psychology but is rather an established vocation for research. In reaching such a position, we argue that a broad range of epistemologies have been used to investigate coaching such as sociology and cognitive psychology. However there is danger that, in the search for new ground, research becomes increasingly esoteric, having less and less impact on the domain that it is researching—namely coaching. As a step against this trend, we argue for and attempt to establish the commonalities across these research approaches suggesting that coaching is social, political, and pedagogical in nature. We accept that coaching is inherently complex but argue that coaches can be educated to cope with complexity through a professional judgment and nested decision making process. To facilitate this process, we offer a model for coaching that is inclusive of the commonalities across coaching research, summarizes our major theoretical points yet practical enough for application by coach educators and coaches.