1. understanding of three-dimensional graphics: the process and method that students need to master to understand three-dimensional graphics. In the teaching process of space and graphics, teachers can use a large number of teaching AIDS to display them intuitively in class, so that students can directly observe three-dimensional graphics.

2. Volume calculation of three-dimensional graphics: Students need to master the volume calculation formula and derivation process of cuboid, cube, cylinder, sphere and other three-dimensional graphics.

3. Surface area calculation of three-dimensional graphics: Students need to master the surface area calculation formula and derivation process of three-dimensional graphics such as cuboid, cube, cylinder and sphere.