The basic knowledge of junior high school mathematics includes: concepts, laws, properties, laws, formulas, etc. Among them, mathematical concept is not only an important part of basic mathematical knowledge, but also the basis for learning other mathematical knowledge. The process of students mastering basic knowledge is actually the process of mastering concepts and using them to judge and reason. Laws in mathematics are based on a series of concepts. Facts have proved that if students have correct, clear and complete mathematical concepts, it will help them master basic knowledge and improve their ability to operate and solve problems. The teaching of any part of the content is inseparable from the concept teaching.
(2) Mathematical concept is the basis of developing thinking and cultivating mathematical ability.
Concept is one of the thinking forms and the starting point of judgment and reasoning, so concept teaching can play an important role in cultivating students' thinking ability. Without a correct concept, there can be no correct judgment and reasoning, let alone the cultivation of logical thinking ability. In the process of concept teaching, in order to make students acquire related concepts smoothly, it is often necessary to provide students with rich perceptual materials for observation. On the basis of observation, through the inspiration and guidance of teachers, the perceptual materials are compared, analyzed and synthesized, and finally the essential attributes of the concept are abstracted. Through a series of judgments and reasoning, the concept has been consolidated and applied. So as to gradually improve students' initial logical thinking ability.