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The purpose of this paper is to present an analysis of the difficulties faced by students when working with different representations of vectors, planes and their intersections in \(\mathbb {R}^{3}\). Duval’s theoretical framework on semiotic representations is used to design a set of evaluating activities, and later to analyze student work. The analysis covers three groups of undergraduate students taking introductory courses in linear algebra. Different types of treatments and conversions are required to solve the activities. One important result shows that, once students choose a register to solve a task, they seldom make transformations between different registers, even though this facilitates solving the task at hand. Identifying these difficulties for particular transformations may help teachers design specific activities to promote students cognitive flexibility between representation registers. 相似文献
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Research in Science Education - The first phase of this multiphase study involves modeling of college students’ thinking of friction at the microscopic level. Diagnostic interviews were... 相似文献
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Andrew Edgar 《国际体育史杂志》2015,32(15):1804-1807
Philosophy as a discipline is typically characterized through the use of rigorous argument and analysis, and the clarification of the meaning of concepts. Philosophical problems are thus resolved, not through the appeal to empirical evidence, but by identifying inconsistent and confusing patterns of thought and reflection. This paper will clarify the nature of a philosophical methodology by explicating the relationship between the philosophy of sport and the core traditional areas of philosophy, metaphysics, epistemology, axiology and logic. 相似文献
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There is an increasing rhetoric from politicians for universities to become more involved in policy analysis and policy research. In this article, we reflect on our experiences of the analysis we conducted into the legislation to introduce biometric identity cards in the United Kingdom. We highlight how our work had direct consequences for the ongoing policy deliberation around this controversial piece of legislation. In particular, we highlight our role in the debate surrounding the government's figures for identity fraud and the concerns about the likely cost of the scheme to the government and taxpayer. We end the article by discussing some of the practical realities of such a foray into real politik. 相似文献
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This article presents an exploratory study of e-mail use for reflective narration. Narration is viewed from three perspectives: the narrating act, the narrative statement, and the story. These perspectives are used to characterize the 69 e-mails that were exchanged between 13 groups of children from three primary schools. The findings show that e-mail narration has monologic and dialogic qualities, and leads to cognitive and personal reflections on the learning task. We conclude that e-mail can serve a meaningful function in a narrative curriculum aimed at experiential inquiry. In addition, we suggest a need for future research that adopts a broad view of learning that includes different kinds of dialogues and values affective as well as cognitive aspects of these dialogues. 相似文献