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编写教材的出发点可能因人而异、因时而异,但落脚点应该是内容安排科学合理、呈现方式条理清楚、教师好用、学生易懂。笔者最近刚用完人教版3-1新教材,整体感觉较好,但对其中“静电现象的应用”一节内容的严谨性和安排不甚理解,下面谈谈个人看法。一、“静电平衡状态下导体的电场”中的部分内容阐述不够严谨、科学1.将金属导体放入匀强电场中,导体中的自由电子将在热运动的基础上附加一个定向移动,也就是
The starting point for the preparation of teaching materials may vary from person to person and from time to time, but the goal should be that the content arrangement is scientific and reasonable, the presentation methods are clear, the teachers are easy to use, and the students are easy to understand. The author recently used up the new teaching materials for the PEP 3-1. The overall feeling is better, but I don’t quite understand the rigor and arrangement of the “Application of Static Electricity” section. Let’s talk about personal opinions. Part of the content of the “Electric field of the conductor in the state of electrostatic equilibrium” is not rigorous enough. Science 1. Put the metal conductor into a uniform electric field. The free electrons in the conductor will attach a directional movement based on the thermal motion. That is,