电压表是基本的电学测量仪器.在初中要求学生“学会正确使用”,并能进行“观察、测量和读数”.到了高中,进一步要求学生了解其结构和工作原理,使学生对电压表的使用从感性上升到理性,从知其然到知其所以然.但在实际教学中,一些教师往往只注重电压表的使用,学生只记住一些表面的结论,从而影响了对电庄表的真正掌握.对此,笔者以为在教学中,应从结构入手,通过比较或类比的方法,对该知识点进行强化. The voltmeter is a basic electrical measuring instrument. In junior high schools, students are required to “learn to use it properly” and to “observe, measure, and read”. In high school, students are required to understand their structure and working principle to make students use voltmeters. From sensibility to reason, from knowing the truth to knowing why. But in actual teaching, some teachers only pay attention to the use of voltmeters, students only remember some superficial conclusions, thus affecting the real mastery of Dianzhuang Watch. In this regard, the author thinks that in teaching, it should start with the structure, through the method of comparison or analogy, to strengthen the knowledge point.