1, weak mathematical foundation, unable to keep up with the review progress, leading to lack of confidence or even giving up; 2. Familiar with the basic knowledge, but unable to apply it; 3, confused about knowledge, no ideas when doing the problem; 4. When doing questions, I like to review similar questions I have done in the past, and I need to try many times to answer them. 5, nervous stage fright during the exam, resulting in the usual questions lost points. It is easy to form a brain blank. 6. Spend a lot of time on big questions, often do or may do big questions in exams, but the score is lost on the questions that should not be lost. 7. I don't summarize, and I feel strange every time I do a problem. 8. The speed of doing the questions is slow, and the examination time is not enough. 9. The questions are not rigorous. I always lose points in details or miscalculations. Some mistakes in solving problems lead to the total score of 10, and the learning attitude is not correct. Copy homework (before the third year of high school), little brain.