Five copies. The textbook of senior high school mathematics in Weifang City, Shandong Province is version B of PEP. A * * *, there are five books and textbooks, compulsory one and compulsory two, compulsory one, compulsory two and compulsory three are optional. Weifang is located in the west of Shandong Peninsula, with a land span of11810 ′ ~1200 ′, a latitude of 35 41′ ~ 37 26 ′, and a warm temperate monsoon with semi-humid continental climate.