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arXiv physics/0207029physics.ed-ph
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探讨学生对量子力学的理解:自发传导模型

Investigating Student Understanding of Quantum Mechanics: Spontaneous Models of Conductivity

Michael C. Wittmann, Richard N. Steinberg, Edward F. Redish

摘要:

学生们将学习几种导电模型,包括入门级和高级水平。从电路中电流流动的早期宏观模型,通过对原子晶格中电子流动的微观粒子描述的讨论,到高级物理课程中微观非定域能带图描述的发展,他们需要能够区分常用的,尽管有时相互矛盾的物理模型。在对学生关于传导模型的推理的调查中,我们发现学生通常无法解释导体中自由电子的存在,并创建模型,导致错误的预测和与物理学专家描述相矛盾的反应。我们已经使用这些发现作为指导,以创建课程材料,我们表明可以有效地帮助学生更有效地应用不同的传导模型。

英文摘要:

Students are taught several models of conductivity, both at the introductory and the advanced level. From early macroscopic models of current flow in circuits, through the discussion of microscopic particle descriptions of electrons flowing in an atomic lattice, to the development of microscopic non-localized band diagram descriptions in advanced physics courses, they need to be able to distinguish between commonly used, though sometimes contradictory, physical models. In investigations of student reasoning about models of conduction, we find that students often are unable to account for the existence of free electrons in a conductor and create models that lead to incorrect predictions and responses contradictory to expert descriptions of the physics. We have used these findings as a guide to creating curriculum materials that we show can be effective helping students to apply the different conduction models more effectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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