课堂演示实验是学生接触实验的重要形式,尤其在初三年级的化学启蒙教学中占有十分重要的地位。实践证明,欲提高课堂演示实验的效果,有必要对课本上的实验进行改进、调整和补充,因时因地制宜地精心设计课堂演示实验。下面就初中化学演示实验的改进、调整和补充谈点个人的做法和体会。 Classroom demonstration experiment is an important form of student exposure experiment, especially in the third grade of chemical enlightenment teaching occupies a very important position. Practice has proved that, in order to improve the effect of classroom demonstration experiments, it is necessary to improve, adjust and supplement experiments on the textbooks, and to elaborate classroom demonstration experiments according to local conditions. The following junior high school chemistry demonstration experiment to improve, adjust and add talk about personal practices and experiences.