It is necessary for Jiayi to learn math. Jiayi mathematics teaching material system fully meets the requirements of the new curriculum standard and perfectly realizes synchronization with the teaching materials of public schools; According to the differences of student groups, elite teaching materials suitable for excellent students and experimental teaching materials suitable for secondary and above students are published at different levels; In view of the differences of teaching cycles in different countries, it is necessary to publish four versions of the teaching material system: spring edition, summer edition, autumn edition and winter vacation edition.