为了提高习题课的教学效果和学生上习题课的兴趣,我在教学中根据一些典型题目,设计操作简便、效果明显的演习实验,有的题目先让学生在课堂上进行讨论,然后用实验对不同的现象进行裁决或验证,有的题目一边分析、一边演示,使抽象的道理直观地表现出来,减小学生理解的难度。通过课后的检查表明:凡是配有演示实验的题目,都给学生留下了深刻的印象。下面介 In order to improve the teaching effect of the exercise class and students’ interest in the exercises, I designed the exercise experiments with simple operation and obvious results according to some typical topics. Some of the topics were first discussed by the students in the class, and then the experiment was used. Different phenomena are judged or verified, and some topics are analyzed and demonstrated at the same time so that the abstract truth is displayed intuitively and the difficulty of students’ understanding is reduced. Through the examination after class, it was shown that all the subjects with demonstration experiments left a deep impression on the students. Below