The core of "learning before teaching" is to cultivate students' preview ability before class and let students develop good self-study habits. The new mathematics curriculum standard clearly points out that students' self-study ability should be strengthened. "Learning before teaching" can promote students' enthusiasm for learning, develop their intelligence and cultivate their ability. Teachers should master this teaching mode to lay a good foundation for improving the quality of education and teaching.

The core of "learning before teaching" is the cultivation of self-study ability, which is the concrete embodiment of students' main role. Therefore, whether from the perspective of implementing quality education, lifelong education or innovative education, it is an important subject in our mathematics teaching reform to cultivate students' autonomous learning ability and make them learn from "learning" to "learning". As we all know, self-learning ability is not innate, but acquired. In primary school, trying to use the method of "learning before teaching" has a great influence on promoting students' enthusiasm for learning, developing students' intelligence and cultivating students' ability. For rural primary school students, the method of "learning before teaching" is also feasible.