In fact, I don't think there is much difference in mathematics between junior high school and senior high school. Primary school mathematics is different from primary school mathematics, which can only be said to be arithmetic, while high school mathematics is different. In senior two, we also had analytic geometry in mathematics at that time, mainly studying ellipses, hyperbolas and parabolas. If you are not careful, you may not even know what you are studying. You are still in the first year of high school. When we are in Grade One, we should mainly use trigonometric functions. I didn't know much at first, but I became proficient in doing more questions slowly. You can take your time. The most important thing is, after the monthly exam is over and the paper is corrected, you should look at what you shouldn't have answered wrong first. Ask the teacher more questions when you do the questions. You can also buy a book called 1+65438. When I was in high school, I bought this kind of reference books for many subjects, because there are explanations in the answers to the questions of these reference books. Why did I do this? Why is this answer? I don't know if there is such a book now.