10 minute break, students should quickly sort out the learning content of the last class, and don't rush to finish the homework assigned by the teacher. Some students mistakenly think that the more study time, the better, and engage in "continuous operations", and don't let go of 10 minutes between classes. After class, some students are still thinking or answering questions from last class. This will not only do bad homework, but also affect the study of new courses. As a result, the problem in the last class was not solved, and the content of the next class was also a little knowledge. In this way, day after day, I am in a state of tension and coping all day, and there are more and more problems. This is one of the reasons why some students have regressed or made little progress in their studies. At the same time, there is another phenomenon: some students rush out of the classroom as soon as the bell rings, making noise, eating snacks, chasing each other, and even playing ball during this time. In the long run, it will lead to students' inattention in class, lower and lower efficiency in class and little progress in learning.