Let students acquire mathematical knowledge and application skills. According to the information of education, students can acquire important mathematical knowledge (including mathematical facts and experience in mathematical activities), basic mathematical thinking methods and necessary application skills through mathematics learning in compulsory education in an appropriate way. Compulsory education is a national education that school-age children and adolescents must accept according to law and is guaranteed by the state, society and family. Its essence is a system of compulsory education for school-age children and adolescents for a certain period of time according to law.