《数学新课程标准》指出,学生是学习和发展的主体,自主探索、合作交流是学习数学的方式之一,而这一学习方式正是培养学生创新精神和实践能力的重要途径。公开课中常会听到精彩的小组合作学习,热烈的讨论、精妙的发言、闪现的思维火花让听课老师也为之兴奋。可精彩的公开课并没有换得良好的作业质量,问题逐一出现:课堂成了学优生的舞台,学困生在课堂中如同摆设,甚至连思考都不需要。如何才能让“合作学习”真正发生?如何让“合作”指向学习的本质? The New Curriculum Standard of Mathematics states that students are the main body of learning and development. Independent exploration and cooperation and exchange are one of the ways to learn mathematics. This way of learning is an important way to cultivate students’ innovative spirit and practical ability. Public class often hear wonderful group cooperative learning, lively discussion, exquisite speeches, flash of thinking Spark lecture teacher is also excited. Wonderful open class did not change for good job quality, the problems one by one: the classroom became a stage for learning eugenics, poor students in the classroom as furnishings, not even thinking do not need. How to make “cooperative learning” really happen? How to make “cooperation” point to the essence of learning?