① The knowledge content of the same module, version A and version B is different. For example, the classification of quadrangular prism and the concepts of regular prism and regular prism in the first chapter of compulsory 2 space geometry are not only given in version B, but also used for examination, but not in version A. In this chapter, there are also the concepts of spherical distance and convex polyhedron given in version B.

② As the same knowledge point, its position and position in the textbook are different. For example, the principle of ancestral source is mainly studied and explained in the B version of the course. Version A is given in Exploration and Discovery. There is also the third chapter intercept equation, in which version A is given in the example and version B is given in the exercise. There is also the distance between 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. The A version of Geometry of Space pays attention to the examination of spatial imaginative thinking, and more is to combine practical problems. Version B pays attention to the extension of concepts and cultivates students' ability to analyze problems and think logically.