First, students have mathematical talent, strong logical reasoning ability, spatial thinking ability and calculation ability, so self-study should not be a problem.
Second, those students who have no talent have average math scores, so it is very difficult for them to learn math by themselves. I am the kind of student who has no talent and average grades. In high school, I couldn't see the blackboard clearly because of myopia. I hardly know what to say in class. I can only read textbooks and understand by myself. I can also do exercises in the textbook, but I have failed in the exam many times, and the exam questions are slightly difficult for the textbook. After class, I also bought some counseling books for self-study, but it took a long time to get results, and my grades still failed. With the growth of grade, the difficulty of the course is deepening, the study is more arduous, and the math scores plummet and are hit hard. Mathematics is beyond my power. Therefore, it is difficult for students like me to learn math by themselves, and they need guidance and guidance.