Teaching materials are the main ones. Take it with you at all times when you do the problem. If you are not clear about the knowledge points, open the textbook to understand. Doing a set of questions five times is far better than doing five sets of questions. Be sure to follow the teacher's rhythm, do what the teacher says the next day, and finish the questions before the teacher. After the teacher finishes speaking, he should review, especially the questions that he can't do and the questions that he did wrong. Facing the college entrance examination questions, we should give up some difficult problems. Classify the questions and strengthen the exercises. For example, in recent years, the big questions of trigonometric function in college entrance examination have all been put away and done again. The first round of review in senior three is from beginning to end, so we should follow the teacher's rhythm and lay a good foundation.