Four Basics: (1) Basic knowledge (2) Basic skills (3) Basic ideas (4) Basic activity experience The national mathematics curriculum standard expands the "two basics" to "four basics", that is, it adds "basic mathematics activity experience" and "basic mathematics thinking method". Emphasis on foundation is for development. Adhering to the "four basics" in the reform of mathematics education can not only better promote the development of students, but also highlight the three major disciplines of mathematics: (1) calculation ability (2) spatial imagination ability (3) logical thinking ability, in which logical thinking ability should be the synthesis of analysis, synthesis, comparison, abstraction, generalization and transformation, and the cultivation of mathematical ability is completed in the teaching process. Therefore, it is particularly important to make effective use of teaching time and cultivate mathematical ability reasonably, orderly and moderately.