For example, the small class teachers in southeast mathematics and physics have a good reputation. Teachers can help you sort out the main points of knowledge, sort out the knowledge structure, consolidate the basic knowledge, and give corresponding expansion counseling. However, learning should also pay attention to continuity and solidity. Sustainability is manifested in gradual and stable improvement. The firmness lies in the fact that the knowledge learned can be used to solve problems in practice. Believe in yourself, these achievements will be greatly improved.