The new curriculum reform has been implemented since 20 10, and Sichuan senior high school mathematics adopts the new curriculum standard version A textbook. Before 20 10, the outline version of PEP A was adopted in mathematics, and the textbooks in the new curriculum standard were divided into compulsory and elective, while the books in the outline version did not have such a division, but the course content was not very different. If you have any other questions, please feel free to ask them and answer them for you.