新课程改革强调学生学习方式的转变,在《新课程标准》的基本理念和课程实施建议中,“自主、合作、探究”已经成为新课程中最重要的学习方式之一。合作,从心理学的角度来说,是指两个或两个以上的个人或群体,为实现共同的目标,在某项活动中联合协作的心理行为。合作,是共同活动的基本条件,是集体凝聚力的核心,是取得成功的关键,它能克服传统教学存在的弊端,满足改革课堂教学提高教学效率的需要,它将社会心理学的合作原理纳入人际交往,对于认知发展有促进功能。在近几年的学习观摩实践中,我们的数学课堂发生了可喜的变化:合作学习进入数学课堂,学生成为学习的主体,学生的学习积极性有了很大的提高,自主、合作、探究正成为学生主要的学习方式之一。一、教师角色的定位 The new curriculum reform emphasizes the transformation of students’ learning styles. Among the basic concepts of “new curriculum standards” and curriculum implementation proposals, “autonomy, cooperation and inquiry” have become one of the most important learning styles in the new curriculum. Cooperation, from the psychology point of view, refers to two or more individuals or groups, in order to achieve common goals, activities in a joint collaboration of psychological behavior. Cooperation is the basic condition for joint activities and the core of collective cohesion. It is the key to success. It can overcome the shortcomings of traditional teaching and meet the need of reforming classroom teaching to improve teaching efficiency. It incorporates the principles of social psychology cooperation into interpersonal relationships Communication, for the promotion of cognitive development. In recent years, learning and observing practice, our mathematics classroom has undergone a gratifying change: Cooperative Learning into the mathematics classroom, students become the main body of learning, students have greatly increased the enthusiasm for learning, autonomy, cooperation, research is becoming One of the major learning styles for students. First, the role of teachers in positioning