The purpose of preview is the process of actively acquiring new knowledge, which is helpful to mobilize the initiative of learning. Before explaining new knowledge, it is an important means to read the teaching materials carefully and develop the habit of previewing actively.

Therefore, we should pay attention to cultivating self-study ability and learn to read books. For example, if you teach yourself an example, you should find out what the example is about, what the conditions are, what you want, how to answer it in the book, why you answer it like this, whether there is a new solution and what the steps are.

2. Active thinking

Many students just listen and can't think actively in the process of listening, so when they encounter practical problems, they don't know how to apply what they have learned to answer them.

The main reason is that you didn't consider the trouble caused in class. In addition to following the teacher's thinking, we should also think more about why we define it like this, and what are the benefits of solving problems like this. Taking the initiative to think can not only make us listen more carefully, but also stimulate our interest in some knowledge and help us learn more.

3. Be good at summing up laws.

Generally speaking, there are rules to follow in solving mathematical problems. When solving problems, we should pay attention to summing up the law of solving problems. After solving each exercise, we should pay attention to reviewing the following questions:

1, what is the most important feature of this problem?

2. What basic knowledge and graphics are used to solve this problem?

3. How do you observe, associate and transform this problem to achieve transformation?

4. What mathematical ideas and methods are used to solve this problem?

5. What is the most critical step to solve this problem?