2. Follow the psychological law of students learning mathematics, emphasize that students should start from their existing life experience and attach importance to cultivating their innovative consciousness and practical ability.

3. Teach students the skills of listening to lectures and develop the habit of using their brains actively. In order to make students form the habit of using their brains actively, we should start with the skills of listening carefully, and teach students the "four skills": seeing, thinking, listening and speaking, and serve their study with the "four skills".

4. Teach students to apply mathematics and apply what they have learned.

5. Optimize the democratic relationship between teachers and students, so that students are willing to communicate.