2. Homework is a tool to test students' learning level and cultivate their thinking ability.

3. Homework is an auxiliary tool for teaching. Zhuang Bing can talk. What are the main principles of junior high school math homework design: 1? The principle of pertinence and refinement?

2. The principle of hierarchy

3. The principle of diversity

4. Inquiry principle

5. Skill principle

6. Interesting, practical and practical principles Jiang said that various forms of math homework are a paradise for students to learn, create and develop again. In junior high school mathematics teaching, under the guidance of the new curriculum concept, teachers should be good at adopting flexible teaching methods, pay attention to the guidance of students' learning methods and guide students to learn actively. In the optimization design of homework, teachers should pay more attention to it, adopt various means and forms, reduce mechanical repetition and consolidate exercises in general, try to integrate the cultivation of students' learning emotion, learning interest, innovative consciousness and practical ability into homework, improve the interest and effectiveness of extracurricular homework, make every student like math homework, and think independently, master knowledge, train skills and exercise will in the process of completing math homework independently, so as to promote students' knowledge and ability to go hand in hand.