《义务教育数学课程标准》指出:“教师教学应以学生的认知发展和已有的经验为基础,面向全体学生;教师要发挥主导作用,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、体会和运用数学思想与方法,获得基本的数学活动经验。”“课堂教学应激发学生兴趣,调动学生积极性,引发学生的数学思考,鼓励学生的创造性思维。”“让学生初步学会从数学的角度发现问题和提出问题,综合运用数学知识解决简单的实际问题,增强应 ”Compulsory education mathematics curriculum standards“ pointed out: ”teacher teaching should be based on the cognitive development of students and the existing experience as a basis, for all students; teachers should play a leading role, to guide students to think independently, take the initiative to explore, cooperation and exchange, Students understand and master the basic mathematical knowledge and skills, experience and use of mathematical ideas and methods, access to basic mathematical activities experience. “” Classroom teaching should stimulate student interest, mobilize the enthusiasm of students, triggering students’ mathematical thinking, to encourage students Creative thinking. “” Allow students to initially learn to find problems and ask questions from the mathematical point of view, comprehensive use of mathematical knowledge to solve simple practical problems, enhance the