Math needs to do more problems! Once you have mastered the basic knowledge, find a set of questions to do! Absolutely useful! This can get rid of carelessness and speed up the train! I'm a freshman, and I'm taking math in the college entrance examination 134. These are the practices of key high school students. You can try! I don't think making up lessons after class is necessarily effective. Mathematics pays attention to methods and proficiency, and it is effective to practice more by yourself! ..... Experience has proved!