《数学课程标准》指出“动手实践,自主探索与合作交流是学生学习数学的重要方式。数学学习活动应当是一个生动活泼的、自主的和富有个性的过程”。从学生认识事物发生、发展的规律来看,传统的数学教学中,教师讲授、学生练习的单一教学方式已不能适应教学发展的需求,甚至造成学生的学习障碍。笔者认为出现这种问题的原因首先是教师缺乏对互动深层次的认识,其次是教师对教学互动的策略失当和调控能力不足。那么如何才能真正发挥课堂互动的实效性, The standard of mathematics curriculum states that “hands-on practice, independent exploration and cooperation and exchange are important ways for students to learn mathematics, and mathematics learning activities should be a lively, autonomous and individualized process.” From the point of view of students ’understanding of the occurrence and development of things, the single teaching method of teacher teaching and student practice in traditional mathematics teaching can no longer meet the demand of teaching development and even cause students’ learning disabilities. The author thinks that the reason of this kind of problem lies in the fact that the teacher lacks the deep understanding to the interaction, the second is the teacher’s misunderstanding about the teaching interaction and the lack of ability to control. So how can we really play the effectiveness of interactive classes,