1　精心准备演示实验 ,着眼培养观察能力演示实验是教师进行表演、学生观察、教学双方协调活动的实验。它是学生认识化学知识的开始 ,也是化学课直观教学的重要手段。演示实验不仅能提供鲜明、生动的感性材料 ,诱发学生的学习兴趣 ,帮助学生形成规范操作的意识 ,还可以培养学生 1 Prepare demonstration experiments meticulously, focusing on the ability to observe observations Demonstration experiment is an experiment in which teachers perform performances, student observations, and teaching activities. It is the beginning of the students’ understanding of chemical knowledge and an important tool for the intuitive teaching of chemistry classes. Demonstration experiment can not only provide vivid and vivid sensuous materials, induce students’ interest in learning, help students form a sense of standard operation, but also can train students