高中阶段的学生所学的课程明显比初中阶段要多,而且一些学科比如化学,虽然课本知识多但是占的课时却很少。有限的时间内,学生需要掌握的知识却不少,加之,高中阶段的学生自主的时间很少,这就使得学生对所学知识很难在课下消化、巩固。因此,教师应该提高课堂教学效率,进行有效教学。 Students in high school have obviously taken more courses than those in junior high, and some such as chemistry, although they have a lot of textbooks, spend very little time. A limited time, students need to master a lot of knowledge, coupled with the high school stage students little time autonomy, which makes it difficult for students to learn the knowledge digested and consolidated under the class. Therefore, teachers should improve the efficiency of classroom teaching and carry out effective teaching.