New insights into student understanding of complete circuits and the conservation of current
New insights into student understanding of complete circuits and the conservation of current
复制标题
对学生理解完整电路和电流守恒的新见解
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
L. McDermott
中科院分区：
文献类型：
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作者：
M. R. Stetzer;P. V. Kampen;Peter S. Shaffer;L. McDermott
本文报道的这项研究是对早期调查结果的深入检验，该调查发现，大学生往往对完整回路的概念没有形成功能上的理解。这项研究的参与者包括物理入门课程和高级物理课程的本科生以及研究生助教。尽管完整电路的概念已包含在标准的本科课程中，但所有三组的学生都难以将此概念应用于单回路、阻性电路。在分析包含多个电池的电路时，学生经常不应用电流守恒定律。某些基本的概念上的困难横跨所有人群，甚至在涉及模拟电子学的高级课程教学后持续存在。
The research reported in this paper represents an in-depth examination of the finding from an earlier investigation that university students often do not develop a functional understanding of the concept of a complete circuit. Participants in this study included undergraduates in introductory and upper-division physics courses as well as graduate teaching assistants. Although the concept of a complete circuit is covered in the standard undergraduate curriculum, students in all three groups had difficulty in applying this concept to single-loop, resistive circuits. Students frequently did not apply the conservation of current when analyzing circuits containing more than one battery. Certain basic conceptual difficulties spanned all of the populations and even persisted after instruction in upper-division courses that involved analog electronics.