1. The number of users of textbooks is different: People's Education Edition has the largest number of users, followed by Jiangsu Education Edition, and Shanghai Education Edition has the least number of users.

2. Different publishers: People's Education Press is published by People's Education Press, Jiangsu Education Press is published by Jiangsu Education Press, and Shanghai Edition is published by Shanghai Education Press.

3. The textbook is different in difficulty: Shanghai edition contains the most knowledge points, which is the most difficult among the three editions, and the knowledge points are scattered. People's Education Edition and Soviet Education Edition are relatively easy. The textbooks are all different.