Primary school schoolmaster notes the best version. According to the relevant information, as long as the students are selected according to their level, because different versions are different in difficulty, students' understanding is different. If the students' level is relatively high, you can choose Beijing Normal University Edition. The most difficult version of Beijing Normal University can improve those students who have a good foundation, and then if I am not good, I can choose People's Education Edition, which is the simplest of all versions.