The function of review class is to improve the ability to solve problems, so the practice of review class should reflect comprehensiveness, flexibility and development, which is conducive to cultivating students' practical ability and innovative consciousness, so that students at different levels can be improved in different aspects. According to the focus of the review course, the following exercises were selected and designed:

1, comprehensive exercises. The review class pays more attention to the communication and connection between students' knowledge, and students can solve problems by searching relevant knowledge points through the information provided by comprehensive topics. Combine these knowledge points flexibly and find out the solution to the problem.

2. Exploration exercises. This practice moderately broadens and extends the knowledge learned, which is conducive to stimulating students' interest in learning and broadening their horizons. For example, when reviewing the knowledge of plane graphics, let students spell out their favorite graphics with puzzles, and then calculate their area. Students have active thinking and strong interest in inquiry.

3. Open practice. The diversity of open problem-solving strategies and the non-uniqueness of question answers can cultivate the flexibility of students' thinking. Let students with different abilities get thinking training in the process of solving problems. If the teacher provides two pieces of information, 6 1 class species 120 trees and 62 class species 150 trees. Students ask questions and answer them themselves. Students can mobilize their existing knowledge and experience, ask various questions and choose different methods to answer them, and all of them can experience the joy of success.

4. Practice solving practical problems. The purpose of learning mathematics is to use mathematical knowledge and thinking to solve practical problems. The practice design of the review class must be linked with reality. For example, if 205 people go for a spring outing, how many cars are needed, and each car takes 40 people? Some students think that five cars are enough, and the remaining five people add one car; Another wind thinks that six cars are needed and traffic laws cannot be violated. Students have been able to combine practice and solve problems reasonably.