Junior high school mathematics is a simple calculation problem first, which is the foundation of foundation. Some geometry problems need to be done more, mainly to be familiar with the characteristics and properties of each geometry, so there is no problem. There are also functions, linear functions, quadratic functions and proportional functions, which can be comprehensively calculated, so we must be skilled and understand their respective characteristics. Then first of all, you should have a certain amount of questions to improve the accuracy of your own questions. In short, do more, but be sure to make all the knowledge points clear, or you will be at a loss.

What about chemistry? The main thing is to remember the nature of each substance, recite it more when you have time, and review it even if you know it, so that you can be proficient and chemistry will be fine. Really, the course of acid and alkali salt is the key and difficult point. If you want to learn well, you still have to study in high school in the future. Let's go Do as I say, there will be no problem. If you are tired of doing it at ordinary times, take a rest, listen to some songs and relax. . . . You can do it.