Understand first, then do the problem. Don't brush the questions blindly after each class. First of all, go through the knowledge points in class in your mind like a movie. If there is anything missing or unclear, find the answer from the book in time. The text in the textbook can be read word for word. The math problem cannot be solved for the following reasons: 1. I know the formula, but I don't know how to use it In mathematics teaching in primary and secondary schools and even high schools, related formulas are the key items to be explained. The problem is that students will recite the formula as an ancient poem, without a deep understanding of its principle and derivation method. This has also led to the understanding of the formula of a.b.c, but if it were e.f.g, students would not have done it. On the one hand, it is the understanding of the formula, on the other hand, it is the application and expansion of the formula. 2. Blind spots in knowledge or remembering students' different efforts and different IQs may lead to different final results. When using a lot of knowledge, there will be some problems, such as understanding the problems in the stem, which may be too entangled in a word or a number. Or the memory disorder caused by stress, the formula is not fully remembered. 3. Open your mind Many students' ability to understand the topic at that age will be limited to one direction. When you do the problem, you will be suddenly enlightened, and there will be a feeling that your brain is wide open. I seem to suddenly understand. This kind of enlightenment or epiphany needs to be experienced and exercised in a large number of homework exercises. Everything is based on my own study. After all, most people have the same IQ. Keep working hard and sum up your habits, which will help you solve problems better.