在生物学课堂教学中,每节课的讲授内容多,要学生在短短45分钟内基本掌握所教的内容有一定的困难,而对于基础较差的农村初级中学的学生来说,则困难更大。所以,笔者认为,教师在备课时除了在直观教具方面应多作些准备外,还应重视设计少量课堂练习,让学生在课堂内在听完教师讲课后,用最后10分钟 In biology classroom teaching, there are many lectures in each class, and it is difficult for students to basically grasp what they are teaching in just 45 minutes. However, it is difficult for students with poor basic rural junior high schools. Bigger. Therefore, the author believes that teachers should make more preparations in addition to visual aids when preparing lessons, but they should also pay attention to designing a small number of classroom exercises so that students can use the last 10 minutes after listening to the lectures in class.