公式,概念彻彻底底的给他搞清楚
上课用点心听课,作业自己做,积极和学生讨论
多做题多练习
多找老师问问题
First, foster your interest.
Then, have a class seriously and review the knowledge which teacher taught.
I only want to say to you, you can only study math by those that I mentioned or you are not talented in math. In daily life, if you have any problems, you will be supposed to ask your math teacher and classmates for help. According to my experience, it is not so useful to do many exercises. But you should do these that you usually make mistakes in.