2. Students delve into the textbook, summarize the unit knowledge independently, and clarify the knowledge points that must be mastered in this unit.

3, student organization, teachers help students understand the knowledge structure, and at the same time can take into account the different requirements of students at different levels.

4. Teachers and students * * * summarize the problem-solving ideas, methods and skills of various types of questions in this unit.

5, teachers and students * * * check and evaluate the review effect.