For high school mathematics. Personally, it is much more difficult than junior high school. More inclined to understand the application. If junior high school math is not good, senior high school need not worry too much. Because high school mathematics is different from the previous problem-solving ideas. Everyone starts from scratch. The first and most important thing is attitude. I think it is most important to listen carefully and do your homework by yourself. I think we should pay more attention to the foundation than the problem. If you get most of the basic points, even if you don't do difficult problems, it will never be bad. Modify it in time. Understanding the wrong questions in time is more effective than brushing them blindly.

I hit it by hand. Satisfied, please adopt.