《数学课程标准》指出:学生学习应当是一个生动活泼的、主动的和富有个性的过程,认真听讲、积极思考、动手实践、自主探索与合作交流也是数学学习的重要方式.随着课程改革的深入,“小组合作学习”正在越来越多地出现在广大数学教师的课堂教学中.从认知理论来看,小组合作学习可以促进学习者的意义构建,促进学生的高水平的思维和学习活动.只有选择恰当的合作交流的契机,才能避免小组合作学习的形式化和低效率,才 The Standard of Mathematics Curriculum states that student learning should be a lively, active and individualized process. Listening carefully, thinking positively, practicing, exploring and cooperating independently is also an important way of learning mathematics. With the reform of the curriculum In depth, “group cooperative learning ” is more and more appearing in the classroom teaching of the majority of mathematics teachers.From the cognitive theory, group cooperative learning can promote learners ’meaning construction and promote students’ high level of thinking And learning activities.Only by choosing the right opportunity for cooperation and exchange, can we avoid the formality and inefficiency of the group cooperative learning