1. Prepare before class. Pre-class preparation for lectures and evaluations includes two items: data statistics and exercise selection. Before giving lectures and evaluating classes, we should make relevant statistics, including the statistics of test scores and the scoring rate of each question. Only by comprehensively grasping the data can we fully grasp the overall situation of students and put forward targeted opinions. For students with the highest grades and higher grades than college students, they should be read by name, especially those with poor foundation. Teachers should carefully capture their highlights from the test papers. The novel ideas and insights found in the marking process should be recommended to the whole class; In short, everything is to improve students' interest in learning. Of course, don't wear a hat too high, which will make students feel arrogant, so the scale of praise will vary from person to person; For those who are behind in their grades, we should be alert and motivated, so that they have a sense of crisis and are full of hope for future study. Don't make students feel inferior, make them uninterested in mathematics and give up on themselves. Therefore, accurate statistics in the early stage is the basis for doing a good job in lectures and evaluations.

2. Classroom form, highlighting students' main body is the guarantee of classroom success. In fact, class evaluation is a review of past knowledge. Compared with the teaching of the new curriculum, students' dominant position in class evaluation should be more prominent. Don't let the teacher speak at once. The role of teachers is to organize, guide and instruct students to think actively, explore actively, make bold assumptions and guesses, ask questions, cultivate students' innovative consciousness, and dare to think and speak. Dare to be bold and unconventional, so that students can truly become the masters of lectures and evaluations.