《数学课程标准》指出:要让学生在参与特定的数学活动、在具体情境中初步认识对象的体征,获得一些体验。对学生而言,体验是一种亲身经历的学习活动,通过行为、认知和情感的参与,获得对数学事实与经验的理性认知和情感态度。体验对于防止学生简单地接受数学结论,加深对数学知识形成的理解,有着举足轻重的作用,因此小学数 “Mathematical Curriculum Standards” pointed out: To allow students to participate in specific mathematical activities, in specific situations in the initial understanding of the signs of the object, get some experience. For students, experience is a kind of learning experience of personal experience. Through the participation of behavior, cognition and emotion, the author obtains the rational cognition and emotion attitude towards mathematics fact and experience. Experience plays a decisive role in preventing students from simply accepting mathematical findings and deepening their understanding of the formation of mathematical knowledge. Therefore, the number of primary schools