The main contents of Number and Algebra are: understanding, representation, size, operation and estimation of numbers; Letters represent numbers, algebraic expressions and their operations; Equations, equations, inequalities, functions, etc.
The main contents of Graphics and Geometry are: the basic graphics of space and plane, the nature, classification and measurement of graphics; Translation, rotation, axial symmetry, similarity and projection of graphics; Proof of the basic properties of plane graphics; Coordinate is used to describe the position and movement of a graph.
The main contents of Statistics and Probability include: collecting, sorting out and describing data, including simple sampling, sorting out survey data and drawing statistical charts. Processing data, including calculating average, median, mode, range, variance, etc. Extract information from the data and make simple inference; Simple random events and their occurrence probability.
"Comprehensive practice" is a kind of learning activity with problems as the carrier and teachers and students participating together. It is an important way to help students accumulate experience in mathematics activities and cultivate their sense of application and innovation. In view of the problem situation, students integrate their own knowledge and life experience, think independently or cooperate with others, and experience the whole process of finding, asking, analyzing and solving problems, so as to realize the relationship between mathematics content, mathematics and real life, mathematics and other disciplines, and deepen their understanding of mathematics content.