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演示实验对于上好物理课、学生学好物理课都是至关重要的。而对于演示实验在授课过程中不同时间段内所起的作用是不同的。在教学过程中要把握好在导入时、新课中和练习时演示实验的作用和目的。
Demonstration experiment for the good physical lesson, students learn physics lesson are crucial. And for the demonstration experiment in the course of different periods of time played a different role. In the teaching process, we must grasp the role and purpose of demonstrating experiment when introducing new class and practice.