电教作为直观教学的一种工具,与传统物理教学相结合,能激发学生的兴趣与思维,促进教学质量的提高。1 利用电教增强演示实验的效果 物理演示实验往往可见度小,后排的学生难以看清,影响学习情绪。利用幻灯投影,解决了这个难题。在“感生电流的产生条件”实验中,我们做了一组复合灯片,模拟演示,产生了奇特的效果。课前我用明胶片绘三块投影片:图1为定片,固定在框上,为感生电流产生 As a tool for intuitive teaching, audio-visual education combined with traditional physics teaching can stimulate students’ interest and thinking, and promote the improvement of teaching quality. 1 The use of audio-visual education to enhance the effectiveness of demonstration experiments Physical demonstration experiments are often less visible, the rear row of students is difficult to see, affecting the learning mood. Use slide projection to solve this problem. In the “conditions of induced current generation” experiment, we made a set of composite lamps to simulate and produce unique effects. Before class I used the film to draw three slides: Figure 1 is the fixed film, fixed in the frame, for the induced current