2. One-dimensional linear equation

3. A preliminary understanding of graphics

4, data collection and collation (statistics)

5. Intersecting lines and parallel lines

6. Plane rectangular coordinate system

7. Triangle

8. Binary linear equations

9. Inequality and unequal groups

Mathematics is the foundation of grade one in junior high school, and it is very important for students to think from number to shape. It is the basis of learning junior high school mathematics well.