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41.
Pratim Sengupta Uri Wilensky 《International Journal of Computers for Mathematical Learning》2009,14(1):21-50
Electricity is regarded as one of the most challenging topics for students of all ages. Several researchers have suggested
that na?ve misconceptions about electricity stem from a deep incommensurability (Slotta and Chi 2006; Chi 2005) or incompatibility (Chi et al.
1994) between na?ve and expert knowledge structures. In this paper we argue that adopting an emergent levels-based perspective
as proposed by Wilensky and Resnick (1999), allows us to reconceive commonly noted misconceptions in electricity as behavioral evidences of “slippage between levels,”
i.e., these misconceptions appear when otherwise productive knowledge elements are sometimes activated inappropriately due
to certain macro-level phenomenological cues only. We then introduce NIELS (NetLogo Investigations In Electromagnetism), a
curriculum of emergent multi-agent-based computational models. NIELS models represent phenomena such as electric current and
resistance as emergent from simple, body-syntonic interactions between electrons and other charges in a circuit. We discuss results from a pilot
implementation of NIELS in an undergraduate physics course, that highlight the ability of an emergent levels-based approach
to provide students with a deep, expert-like understanding of the relevant phenomena by bootstrapping, rather than discarding their existing repertoire of intuitive knowledge.
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Pratim SenguptaEmail: |
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P. L. Kunsch M. Theys J. P. Brans 《Central European Journal of Operations Research》2007,15(3):253-269
Ethical values beyond the satisfaction of basic human needs are specific to each society at a given time. Modern societies
are confronted to the challenges of disappearing natural resources, fierce competition on global markets, and climate change.
In this paper we define ‘good’, and at the same time ‘ethical‘ decisions in the 21st century as being in accordance with the
principles of Sustainable Development. Operations Research can assist sustainable decision-making in two ways: (1) through
the tools of systems thinking, in particular system dynamics and soft system modelling, to provide insight into the way complex
non-linear living systems and human societies function, and help making sustainable decisions, and (2) through educating and
training young people in systems thinking. The paper presents examples of simple models that could serve in classrooms. 相似文献
44.
J. M. Ritzen 《Journal of Optimization Theory and Applications》1975,15(3):327-339
This paper describes the application of the discrete maximum principle to the problem of the introduction of universal primary education.The author is most indebted to the Ford Foundation for their financial support during most of the research reported here, under the Pakistan-Berkeley Project in Educational Planning. 相似文献
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The paper describes a pilot study on the use of computer algebra at upper secondary level. A symbolic calculator was introduced in a pre-examination class studying for advanced pre-university mathematics. With the theoretical framework of Realistic Mathematics Education and Developmental Research as a background, the study focused on the identification of obstacles that students encountered while using computer algebra. Five obstacles were identified that have both a technical and a mathematical character. It is the author's belief that taking these barriers seriously is important in developing useful pedagogical strategies.This revised version was published online in September 2005 with corrections to the Cover Date. 相似文献
47.
Justyna Płotka-Wasylka Heba M. Mohamed Aleksandra Kurowska-Susdorf Rajkumar Dewani Michel Y. Fares Vasil Andruch 《Current Opinion in Green and Sustainable Chemistry》2021
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48.
The comparison of mental models of dynamic systems improves our understanding of how people comprehend, interpret, and subsequently influence dynamic management tasks. Approaches to comparing mental models currently used in managerial and organizational cognition research, especially the distance-ratio and the closeness-approaches, have been criticized for not considering essential characteristics of dynamic managerial situations. This paper builds on a recent analysis method developed to compare mental models of dynamics systems, and introduces this mathematical approach to management and organizational researchers by means of the SEXTANT software. It presents the process of mental model elicitation, analysis, comparison, and interpretation. An example with four elicited mental models illustrates the software’s features to analyze and present the results. Then, the software is compared with existing software to map and compare mental models. Our conclusion is that SEXTANT marks a significant step in enabling large-scale studies about mental models of dynamic systems. 相似文献
49.
为建设高分子物理精品课程,近年来我们关注和跟踪高分子科学发展前沿,开设了"高分子材料流变学"、"高分子凝聚态物理"等新课,编著出版新教材。这些课程和教材的一个显著特点是不失时机地将学科发展的新动态、新成果引入研究生、本科生教学,提升高分子物理课教学质量。在编著新教材中,除介绍大量新知识、新思想外,还探索性地构建起新课程的理论体系和框架。 相似文献
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