对于初中物理教材电压中这一节的教学,以往一直存在着两种方法,大多数同志主张以能量的意义引出电压的概念,使学生从本质上来了解电压的意义。也有同志认为这样教法,学生对电压的意义不容易理解,演示实验又很难做,尤其是教学设备较差的学校更难做到;而且如其它条件不变而电压升高,电流强度必然随之增强,这一点在课文上也没提到,因此还有相当一部分教师仍然把水压作比喻来解释电压的意义。我们过去对这两个方法都试验过,但是没有加以总结和作进一步的试验。本学期,我们把电压这一节教材的教学,作为改进物理教学方法的一个重点,又进行了试验,并且获得了一些初步 For the teaching of this section in the physics textbooks for junior high school, there have been two methods in the past. Most comrades advocate the concept of voltage derived from the meaning of energy so that students can understand the meaning of voltage in essence. Some comrades think that this way, the meaning of the voltage of the students is not easy to understand, demonstration experiments and difficult to do, especially in poor teaching equipment more difficult to do in schools; and other conditions remain unchanged and the voltage increases, the current strength must With the increase, this is not mentioned in the text, so a considerable proportion of teachers still use water pressure as a metaphor to explain the meaning of voltage. We have tried both of these methods in the past, but we did not summarize them and do further experiments. This semester, we put the teaching of voltage in this section as a focus to improve the physics teaching methods, but also tested, and obtained some preliminary