Question 1: The situation is improperly created and lacks pertinence.

In mathematics teaching, it is very important to choose suitable mathematics materials and create a situation suitable for teaching and children's development. According to incomplete statistics, more than 80% of classes are introduced from life or creating situations. There are many wonderful cases, but some are far-fetched.

Question 2: the form of cooperation is abused and lacks substance.

Cooperative learning is a learning method advocated by the new curriculum standards. Cooperative learning is a need of students, a heartfelt desire for cooperation, and a necessary choice for cooperation, rather than cooperation when teachers think it is necessary.