1, introduce the basic knowledge of solid geometry, cultivate and improve students' spatial imagination and ability to grasp graphics.

2. Let students know the spatial graphics through intuition and three views. Taking the cuboid model as the carrier, let students know the positional relationship of points, lines and surfaces, and introduce the volume formula. The new textbook is compulsory. The first set of compulsory courses consists of five topics, namely: preparatory knowledge, function, geometry and algebra, probability and statistics.