Nowadays, it is not a very new problem to reduce students' heavy academic burden and improve classroom teaching efficiency. Reducing the burden is to improve efficiency. How to unify the contradiction between reducing burden and increasing efficiency? The key lies in teachers and classroom teaching reform. One: Clear the purpose and stimulate interest. Curiosity and interest in learning are intrinsic learning motivations. To cultivate students' interest in learning, students should realize the practical value of mathematics, which is of any direct or indirect use to them. Two: diligence and conciseness. Intensive cultivation: Some teachers think that teaching time is directly proportional to teaching effect, and that teachers' classroom teaching and students' extracurricular practice not only make full use of classroom time, but also make full use of students' extracurricular time. Third, get feedback information and adjust teaching methods. Some teachers think it's better to finish teaching as soon as possible and start reviewing as soon as possible, so they cut off the time for students to do homework and feedback to catch up with the progress.