You can't just do problems, you should learn to reflect and summarize. First of all, take out your latest exam paper (math and physics), and don't be afraid to read it if the score is low. Put aside the score problem and seriously reflect on the difference between your own problem-solving ideas and formal answers. What did Lenovo say at the beginning? Think about whether you really learned it. If you don't understand the classroom knowledge, think about what you don't understand, and then focus on improving. When doing a problem, don't just do it. Think about what this problem is about, what is the usual solution to this kind of problem, and summarize and reflect more. After a long time, you will feel comfortable doing it. When you take the exam, you should grasp the time. Easy first, then difficult. Don't lose sight of one thing and lose sight of another. We must set aside time to check. In the last 20 minutes, you'd better check your choices and fill in the blanks. As the saying goes, those who choose well win the world. I hope it helps you, and I wish you success.