1, the knowledge points are biased. The textbook of the fifth grade mathematics teaching edition is difficult, and the exercises are even more eccentric, which is not suitable for the development of primary school students.

2. It's hard to understand. The textbook of Hebei Education Edition pays more attention to creating situations to strengthen the actual connection with life, and attaches importance to cultivating students' ability to collect and process information and analyze and solve problems, which is difficult for primary school students to understand.