1, Zhejiang Education Edition refers to the textbooks published by Zhejiang Education Press. Students in Zhejiang province are generally more proficient in science than students in western provinces, which can be reflected in the national unified college entrance examination results. Therefore, it is more difficult for Zhejiang Education Bureau to compile teaching materials by itself, considering the students' foundation, than to unify teaching materials nationwide.

2. The "Diligent Learning Early" series is a very good teaching aid for junior high schools, suitable for students who have a good foundation in mathematics and want to improve their grades and break through themselves. It is difficult to study hard and synchronize early in class, but the sub-topics are detailed and rich, which is easier for students to accept and can be well connected with school textbooks. At the same time, it also has a strong pertinence, which is suitable for students to prescribe the right medicine and check for leaks. Therefore, it is appropriate.