《全日制义务教育数学课程标准(修改稿)》中指出: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。除接受学习外,动手实践、自主探索与合作交流同样是学习数学的重要方式。在如今的课堂上,“合作交流”作为学生学习数学的重要方式之一,得到了广泛的应用,而小组合作又是数学课堂中常用的一种合作交流方式。在实际教学中,我们常常会发现:有些小组合作看似热闹,却不是每位组员都得到了提高;有些小组合作缺乏目标性,无法快速有效地达成合作目标;有些小组合作索性成了个别优秀生的个人展示……究竟如何才能提高小组合作的有效性呢? Full-time compulsory education mathematics curriculum standard (revised version) “: student learning should be a lively, active and full of personality process. In addition to accepting learning, hands-on practice, independent exploration and cooperation and exchange are also important ways to learn mathematics. In today’s classroom, ”cooperation and exchange" is widely used as one of the most important ways for students to learn mathematics, and the group cooperation is a kind of cooperation and exchange method commonly used in mathematics classroom. In the actual teaching, we often find out: some groups work together to see the lively, but not every member has been improved; some groups lack cooperation and lack of goals, can not be quickly and effectively achieved the goal of cooperation; some groups have become individually grouped How to improve the effectiveness of group cooperation?