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现行人教版高中化学教材中的一些演示实验在操作中显得较为复杂,在课堂有效的时间内难于达到较好的演示和验证效果,本文是作者在教学过程中的一些改进和思考。
Some demonstrative experiments in current PEP textbooks are complicated in operation, and it is difficult to achieve good demonstration and verification results in the effective time of the class. This article is some improvements and reflections of the author in the teaching process.