① The knowledge content of the same module, version A and version B is different. For example, the classification of quadrangular prism, the concepts of regular prism and regular prism are not only given in version B, but also used for examination, which is not given in version A. This chapter also has the concepts of spherical distance and convex polyhedron given in version B.

(2) As knowledge points, their positions and orientations in textbooks are also different. For example, the B version mainly studies and explains the principle of Zuyu, while the A version is given in the exploration and discovery. There is also the intercept equation in the third chapter, which is given in the example and the B version in the exercise. There are also two parallel lines, version A is given in the exercise and version B appears in the example.

③ The emphasis of training in the same chapter is different. In spatial geometry, version A focuses on the examination of spatial imaginative thinking, and more on combining practical problems. Version B focuses on the extension of concepts and cultivates students' ability to analyze problems and think logically.