I studied math education in normal school when I was in college, and now I am a math teacher. (However, I'm leaving my job soon, hee hee); In fact, there is no need to find additional math textbooks. If you really learn the math textbook thoroughly, you can use it freely. Of course, it is necessary to strengthen some exercises. However, your school should have some exercise books. Anyway, when I was at school, the school teacher ordered a lot of students, and there is still a lot to do after the upgrade. There is another way: just listen carefully in class. What the teacher said is the point. I hope it works for you. I remember when I was in junior high school, my teacher told me a math problem, and the answer should be written all over the blackboard. However, the teacher made a summary after speaking. In fact, the answers are all from books. According to the content of the book, there are many contents to be extended, and there are many questions to be done. The exercise book ordered by the teacher is done very carefully. You don't need to read any other extra textbooks, but you must do more questions in chemistry and physics.