Learn from compulsory 1 to compulsory 5 in turn. In Weifang, Shandong Province, the first compulsory course of high school mathematics textbooks mainly introduces basic concepts and principles such as function, exponential function, logarithmic function and trigonometric function, then the second compulsory course of mathematics mainly introduces solid geometry and plane analytic geometry, the second compulsory course of mathematics mainly introduces algorithm, block diagram and probability statistics, the fourth compulsory course of mathematics mainly introduces trigonometric function and plane vector, and finally the fifth compulsory course of mathematics mainly introduces sequence and inequality.