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文化大革命前的中学化学教材专门介绍溶液知识的有两章,分别在初三、高一讲授,新教材将其合并处理,放在初三介绍,避免了不必要的重复和循环。我体会新教材中的《溶液》一章主要有以下特点:
Before the Cultural Revolution, the middle school chemistry textbook specifically introduced the two chapters of solution knowledge. They were taught in the third and third grades respectively. The new textbooks were merged and processed in the third grade to avoid unnecessary duplication and circulation. I understand that the “solution” chapter in the new textbook mainly has the following characteristics: