《义务教育数学课程标准》中指出:“有效的数学活动不能单纯地依赖模仿与记忆,动手实践、自主探索与合作交流是学生学习数学的重要方法。”什么是合作学习?是指学生在小组或团队中为了完成共同的任务,有明确的责任分工的互动性学习,是一种以小组学习为基本形式的教学活动。合作学习被越来越多地引入课堂,小组合作学习成为学生学习数学的重要方式,也成为现代课堂教学的一道亮丽的风景线。但往往小组合作活动流于形式, “Compulsory education mathematics curriculum standards” pointed out: “Effective mathematics activities can not simply rely on imitation and memory, hands-on practice, independent exploration and cooperation and exchange is an important method for students to learn mathematics. ” What is cooperative learning? In the group or team in order to accomplish a common task, there is a clear interactive division of responsibilities learning, is a group learning as a basic form of teaching activities. Cooperative learning is more and more introduced into the classroom. The cooperative learning of the group becomes an important way for students to learn math and becomes a beautiful landscape of modern classroom teaching. However, group cooperation activities tend to be mere formalities,