Mathematics in high school is very difficult. Many students have never taken the exam as soon as they enter high school, and even go to the examination room where they often have nightmares about their math exams after graduating from college.
The biggest difference between high school mathematics and junior high school mathematics is systematicness. High school mathematics is very systematic, so it will lead to the first paragraph not being understood and the second paragraph not being understood. About stupidity, it's actually not a big problem. Can be admitted to high school normally and have normal intelligence. The most important thing to solve these problems is to grasp the foundation. Go back to the textbook. Don't look down on textbooks, thinking that things in textbooks are simple and unwilling to learn or write. In fact, most of the topics are adapted from textbooks.
Moreover, after entering high school, the difficulty of textbook topics is not the same as that of junior high school classes, and many textbook topics are still very difficult and worth writing.
From the perspective of thinking, junior high school mathematics is mainly imitative thinking, while senior high school mathematics is mainly creative thinking, which requires students to draw inferences from others and find different and identical laws. Junior high school can get good grades through practice, while senior high school relies on enlightenment on the basis of practice.
Extended data
The first is the difficulty of understanding mathematics knowledge in senior high school. On the surface, I seem to understand, but once I do the problem, I can't do it. This is because I didn't understand deeply when I first learned, and the degree of understanding exists on the surface; After some practice, the degree of understanding is different, and it will be another realm after the first round of review in senior three.
Of course, not every student will deepen their understanding layer by layer, and they may never understand it, so they don't understand it at all. They just mastered some problem-solving methods, but they won't if the questions change. There is a lot of knowledge in high school that is difficult to understand, which makes many students find it difficult.