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化学实验是中学化学教学的重要组成部分,是学生进行知识认知的重要环节。因此,在初中教学实践中,认清和处理好实验中的问题,对于实现高效课堂是十分必要的。一、实验前的准备问题化学实验主要分为演示实验和探究性实验,演示实验基本由授课教师或专职实验教师完成。而探究性实验,多以学生分组实验的形式进行。在分组实验前,教师要强调遵循实验规律和规则的重要性,要让学生熟知实验内容、实验目的、操作步骤、注意事
Chemistry experiment is an important part of chemistry teaching in middle school, which is an important part of students’ cognition of knowledge. Therefore, in junior middle school teaching practice, it is very necessary to recognize and handle the problems in experiment effectively. First, the preparation before the experiment Chemical experiments are divided into demonstration experiments and exploratory experiments, demonstration experiments by the basic teaching teachers or full-time experimental teachers to complete. The exploratory experiments, mostly in the form of student group experiments. Before the group experiment, teachers should emphasize the importance of following the rules and rules of experiment, let the students know well about the experiment contents, experiment purpose, operation steps, note things