In short, constructivism argues that learners can finish certain tasks and solve problems through the help of teachers and other learning partners, through mutual communication and communication, mutual debate and discussion, cooperation with each other，and form a richer, More flexible understanding。

2。2。2 Social Learning theory

Social learning theory, also known as observational learning theory, of which the representative is the American psychologist Bandura。 Social learning theory emphasizes the ability to use symbols and self-regulation, people are not passive to accept external stimuli, but can actively make such selection, organization and conversion, and to adjust their behavior。 Therefore, the social learning theory agrees that learners can observe the behavior of others and their results, sum up or realize the characteristics of other people's behavior, the formation of rules, and form their own behavior through the reorganization of these rules。 In the theory of social learning, there is a basic view: "When a person takes action, the consequences of the action will have an impact on whether the person will take the same action in a similar situation。"（Chen 2002）Another view is " inpidual can learn through the observation of the behavior of others，rather than their own direct participation in the activities 。。。 。。。 people follow the behavior of those who have the desired consequences of life to design their own lives, rather than to make their own behavior and behavior of those who lead to adverse consequences。 "（Hua 2003）文献综述

Therefore, Bandura later proposed alternative learning model。 In his view, alternative learning is ubiquitous, alternative learning can occur in the understanding of knowledge, skills formation, moral cultivation, behavior and other fields。 Studies have shown that "the way students share responsibility and interact helps students to have a more positive feeling of learning, to form a better inter-group relationship, so that students can form a better self-image。" Therefore, student-student cooperation or interaction not only have the positive significance on people's intellectual aspects but also on the development of social aspects of people。

3。 Present problems of student-student interaction

3。1 Research methods and procedures

Based on the theories of cooperative learning, the author carried out a three-month action research to explore the major problems of student-student interaction in the First Primary School Attached to Huaiyin Normal University。 In order to find out what the major problems in the student-student interaction are, the author listened to many classes in the First Primary School Attached to Huaiyin Normal University, and put importance on the problems of student-student interaction and the related causes, then took done at the same time。 

The participants in the research were the teachers and students from Class 4 Grade 5 and Class7 Grade 5, and other students from different grades。 According to the observation, the number of the students from each class is over fifty, varying from 50 to 55。 Each unit are assigned to story time, grammar, fun time, sound time, song time, cartoon time and checkout time。 As is mentioned above, it takes about five periods to finish the task of teaching a unit。 As for seating arrangement, the students of each class all sit in double rows。 In the two classes the author often listened to, Class 7 is generally active, whether poor or excellent students, While in Class 4, only a small number of students are willing to raise their hands, the classroom atmosphere also appears to be relatively boring。