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.
Mathematical problems cannot be solved for the following reasons:
1. Know the formula, but 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. Knowledge blind spot or memory blind spot.
Students' efforts are different, their IQ is different, and the final result may be different. 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.
At that age, many students' understanding of the topic will be limited to one direction, and when you are doing the topic, you will have a feeling of opening your mind. I seem to suddenly understand. This kind of enlightenment or epiphany needs to be experienced and exercised in a large number of homework exercises.