《数学课程标准(2011版)》指出,“教师教学应该以学生的认知发展水平和已有的经验为基础,面向全体学生,注重启发式和因材施教。教师要发挥主导作用,处理好讲授与学生自主学习的关系,引导学生独立思考、主动探索、合作交流,使学生理解和掌握基本的数学知识与技能、数学思想和方法,获得基本的数学活动经验”。合作交流是学生数学活动的主要形式之一,所以培养学生的数学语言表达能力显得十分重要。 “Mathematics Curriculum Standard (2011 Edition)” pointed out that "teacher teaching should be based on the level of cognitive development of students and the existing experience as a foundation for all students, focusing on heuristic and teaching students according to their aptitude. Teachers should play a leading role to handle teaching And students to learn independently, to guide students to think independently, take the initiative to explore, cooperation and exchange, so that students understand and master the basic mathematical knowledge and skills, mathematical ideas and methods, access to basic mathematical experience. Cooperation and exchange are one of the main forms of students 'mathematics activities. Therefore, it is very important to cultivate students' mathematical language ability.