Although there are many books, they are all written according to the standards of compulsory education mathematics curriculum, just like the outline, and there is no difficulty. The imported scenes and teaching characteristics are slightly different. From the academic year, the learning tasks are the same.

From the perspective of teaching objectives, they are all the same. Understand the relationship between mathematics and life, acquire the necessary basic knowledge, skills, thoughts and activities suitable for the characteristics of the age stage, develop the ability to find, ask, analyze and solve problems, understand the value of mathematics, and improve the interest in mathematics learning.