The basic idea emphasizes the choice of mathematics learning content, the design of mathematics teaching activities and the evaluation of mathematics teaching. It is emphasized that the content of mathematics learning should be conducive to students' active observation, experiment, guess, verification, reasoning and communication. Effective mathematics learning activities cannot rely solely on imitation and memory. Hands-on practice, independent exploration and cooperative communication are important ways for students to learn mathematics. It is emphasized that teachers should stimulate students' enthusiasm for learning, provide students with opportunities to fully engage in mathematical activities, and help students truly understand and master basic mathematical knowledge and skills, mathematical ideas and methods in the process of independent exploration and cooperative communication, so as to gain rich experience in mathematical activities.

The teaching content is presented in the form of "problem scenario-modeling-explanation application"; Design progressive question strings, organically combine knowledge points and guide students' thinking; Reflect the thinking method of mathematics as popularly and realistically as possible, and strengthen the connection between "book world" and "life world". Through observation, thinking, communication and application, students gradually form good mathematical thinking habits, strengthen their awareness of application, feel the joy of mathematical creation and enhance their confidence in learning mathematics well.