1, the concept and operation of number: this includes basic concepts such as integer, fraction, decimal, percentage and other basic operations such as addition, subtraction, multiplication and division.

2. Algebraic concepts and algebraic operations: This includes concepts such as algebraic expressions, equations, inequalities and functions, as well as basic operations such as merging similar terms, removing brackets and solving equations.

3. Plane geometry: This includes basic concepts such as straight line, angle, triangle and quadrilateral, as well as basic properties such as parallel line, vertical line and angular bisector.

4. Solid geometry: This includes the basic concepts of solid graphics and basic calculation methods such as surface area and volume.

5. Probability statistics: This includes basic concepts and methods such as probability statistics, as well as skills such as making statistical charts.

6. Mathematical thoughts and methods: This includes basic mathematical thoughts and methods such as logical thinking, inductive classification and reduction, as well as mathematical modeling and mathematical application.

The benefits of learning mathematics:

1 helps us to understand the world better: mathematics is the language to describe and explain the world. By studying mathematics, we can better understand natural phenomena, scientific principles and social phenomena.

2. Cultivate the ability of logical thinking: Mathematics is a kind of training of logical thinking. By studying mathematics, we can cultivate the ability of logical thinking and improve the ability of analyzing and solving problems.

3. Enhance computing ability: Mathematics is a kind of computing training. By studying mathematics, we can improve our computing ability and better meet the computing needs in daily life and work.

4. Cultivate creativity: Mathematics is a creative subject. By studying mathematics, we can cultivate creativity, discover new mathematical laws and solve problems.