化学教学工作是一项复杂细致的工作,要使教学工作能有目的、有计划地顺利进行,并取得较好的效果,就必须事先做好充分准备。备课包括备教材、备学生、备教学方法。备课是上好课的前提条件,教师备课越充分,教学效果就越好。备课是教师取得教学工作主动权的重要一环,同时也是教师提高思想、业务水平和教学艺术水平的重要途径。 Chemistry teaching is a complicated and meticulous work. If teaching work can be carried out purposefully and in a planned manner and a good result is achieved, it must be fully prepared in advance. Course preparation includes preparing teaching materials, preparing students and preparing teaching methods. Preparing lessons is a prerequisite for a good lesson, the more teachers prepare lessons, the better the teaching effect. Lesson preparation is an important part of teachers’ initiative in teaching. It is also an important way for teachers to improve their thinking, professional skills and teaching art.