Compared with junior high school mathematics, senior high school mathematics is rich in content, abstract and theoretical, because many students are very uncomfortable after entering senior high school, especially senior one. After entering the school, algebra first encounters a theoretical function, which makes it difficult for some students who learn mathematics well in junior high school to adapt quickly. Here are some opinions and suggestions on how to learn high school mathematics well. First, we should change our ideas. Junior high school, especially junior high school, can obviously improve your grades through a lot of practice. This is because junior high school mathematics knowledge is relatively simple and easier to master. Through repeated practice, you can improve your proficiency and your grades. Even so, you don't understand some problems deeply enough or even at all. For example, junior high school |a|=2, and A