There are eight high school mathematics books, compulsory from one to five, elective from two to four.
Mathematics is a universal means for human beings to strictly describe the abstract structure and mode of things, and can be applied to any problem in the real world. All mathematical objects are artificially defined in essence. The evolution of mathematics can be regarded as the continuous development of abstraction or the extension of subject matter, and the eastern and western cultures have also taken different angles. European civilization developed geometry, and China developed arithmetic.