The complete interpretation of teaching materials is a synchronous teaching aid in Wang Houxiong series. The so-called "synchronous class" is to match the teaching materials and correspond to the courses one by one.

However, the textbooks used in different places are different, so the full version of the textbook interpretation is divided into volumes according to grades and disciplines, and different versions are also divided in the same grade and discipline.

This pinyin abbreviation on the cover is the corresponding textbook published by different publishing houses.

Beijing normal university mathematics

RJSX-A-Number A version of mathematics (because the mathematics textbook published by People's Education Publishing House is divided into version A and version B, there will be an RJSX-B)

SX is the abbreviation of subject, which means mathematics!