1. Mathematics is a science, and you can't rely on rote learning. Understanding formulas and principles is the most important thing. Only by knowing them can you know how to use them. So how can we understand it? The best way is to seize the time of class. Be sure to concentrate in class, don't be distracted, don't expect not to understand in class, and you can make up after class. In fact, the teacher is talking about a link in class. If you can't keep up with one link, it will affect your understanding of the next link. If you understand everything the teacher says in class, there is basically no big problem in doing the problem.
Actually, if you can absorb what the teacher said in class, you don't need to develop any study habits. If you understand it in class, you won't have much difficulty in doing the problem. You just need to do some exercises to consolidate it. You don't have to spend a lot of extra time studying by yourself or doing a lot of problems. Give up a few minutes in class and get twice the result with half the effort. On the contrary, you will get twice the result with half the effort if you grasp the lesson. You can also observe for yourself. Students who study well must concentrate in class.
3。 Don't worry about the problems you can't solve. In fact, every math problem is the expansion and application of book knowledge, but some problems need more principles or some problem-solving skills. But exams are based on the basic principles taught by teachers. Don't be afraid of problems that you can't solve. You'd better ask the teacher. The teacher will usually help you find out the key to solving this kind of problem, so that you can draw inferences from others.