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在中学物理必修和选修教材中提供了许多课堂演示小实验,但由于实验条件和环境的不同,教材上的部分演示实验有的很难成功,有的现象不太明显,有的误差很大甚至是不太科学的。因此,作者在教学实践过程中对教材上的部分演示实验进行了分析研究,并且进行了改进与创新,产生了意想不到的效果。
Many small experiments in classroom demonstrations and elective textbooks are provided in middle school physics. However, due to the differences in experimental conditions and environment, some of the demo experiments on the textbooks are difficult to succeed, some are not obvious, and some are very inaccurate. It is not scientific. Therefore, the author analyzed and researched some demonstration experiments on teaching materials in the teaching practice process, and made improvements and innovations, resulting in unexpected results.