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演示实验是物理教学的重要内容。怎样充分发挥演示实验的作用，更好地提高演示实验的效果呢？1．课前预习，明确实验目的学生要在课前认真预习，了解在这一节课的内容中安排了哪些演示实验7这些实验说明什么问题？只有决前‘有疑”，观察实验时才能全神贯注。2．讲解实验装置和
Demonstration experiment is an important part of physics teaching. How to give full play to the role of demonstration experiments and better improve the effectiveness of demonstration experiments? 1. Prepare before class, make clear the purpose of the experiment Students should carefully preview before class and understand what demonstrations are arranged in the contents of this class. 7 What do these experiments illustrate? Only when there is a ‘doubt’ before the end of the decision can you concentrate on the experiment. 2. Explain the experimental device and