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中学物理教学中,在讲授一些抽象的物理概念、变化的物理过程、瞬间发生的物理现象、复杂的物体内部结构时,由于受时间、空间等限制,单纯用语言、仪器、教具,都难以表现,给教学过程带来了很大的困难,影响了物理教学的效果。如果恰当地运用电教手段,“用教学本身发明创造的科学成就来改善教学本身的劳动方式,”可克服教学过程中遇到的困难,增强物理教学的效果。一、幻灯机的使用投影幻灯机的作用归纳起来主要有如下几个方面: 1、实物投影演示,可“化小为大”增
In the middle school physics teaching, when teaching some abstract physical concepts, changing physical processes, instantaneous physical phenomena, and complicated internal structures of objects, due to the limitations of time and space, it is difficult to express language, instruments, and teaching aids alone. It has brought great difficulties to the teaching process and has affected the effect of physics teaching. If the appropriate use of audio-visual means, “the use of teaching itself to create scientific achievements to improve the teaching of its own way of labor,” can overcome the difficulties encountered in the teaching process, and enhance the effectiveness of physics teaching. First, the use of slide projector Slide projector function summed up in the following aspects: 1, physical projection demonstration, can be “small to big” increase