1. Course selection: choose teaching content from teaching materials and teaching AIDS. Teachers must study carefully according to the curriculum standards and students' reality before making a decision. The basic principle of effective mathematics teaching is accuracy and conciseness. In order to be precise and concise, teachers are required to choose the content of conversation and practice.

2. course added: In the teaching process, when students encounter difficult, error-prone and confusing content, the teacher will appropriately supplement some examples, questions and exercises, and even supplement the problem-solving steps in the textbook examples. Teachers must supplement some contents in a targeted way, create more steps for students at several levels to jump on, and guide students, so as to achieve the teaching purpose.

3. Curriculum adaptation: The teaching content in textbooks or teaching materials has been transformed before being used for teaching. we