Preparing lessons carefully is the first step to improve the quality of mathematics teaching in primary schools. Teachers should strengthen their study, first of all, they should strengthen their preview work. The primary school mathematics curriculum standard is the basis for mathematics teachers to prepare lessons and a programmatic document to guide teachers to carry out teaching work. Teachers should thoroughly study and study the curriculum standards, fully embody the advanced teaching concepts of the new curriculum standards in the process of preparing lessons, and the teaching activities should also meet the requirements of the curriculum standards. The teaching goal in the new curriculum standard must be reflected in the teacher's lesson preparation. This paper expounds the knowledge and skills, process and method, emotion and attitude, and makes clear the overall goal of primary school mathematics curriculum. Teachers must have a curriculum standard in mind in the process of preparing lessons.

Textbooks refer to the specific teaching contents in primary school mathematics textbooks. In the process of preparing lessons, teachers should study the textbooks thoroughly and accurately grasp the knowledge points, ability requirements and difficulties that students are required to master in the textbooks. Teachers should know what needs to be understood, what needs to be linked with old knowledge, what needs to be used flexibly and what needs to be cultivated.