对初中学生来说,化学课是一门相对来说比较抽象和难懂的学科,即便是演示实验这样一种直观的教学方法,面对不同的学生,不同的接受群体来说,其所产生的教学效果都是不同的。一般初中化学演示实验都是教师在讲台上操作,学生在台下仔细观察。因为有书本知识做前提,学生对实验结果多少有一些预判和认知,通过教师的实验结果,来验证书上的结论。但是,往往这样一个有些许趣味性的学习,在长期的简便教学模式中变成一次走过场的热闹场面。学生如果没有真正参与到实 For junior high school students, chemistry class is a relatively abstract and difficult to understand the discipline, even demonstration experiments such an intuitive teaching methods, the face of different students, different groups of people, it produces The teaching effect is different. General junior high school chemistry demonstration experiments are teachers in the podium operation, students observe carefully in the audience. Because of the prerequisite of the book knowledge, the students have some predictions and cognitions about the experimental results, and the conclusions of the book are verified through the experimental results of the teachers. However, often such a slightly interesting learning, in the long-term simple teaching mode into a lively lively scene. Students are not really involved if they are not