《义务教育数学课程标准》指出:“有效的数学学习活动不能单纯地依赖模仿与记忆,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。”建构主义教学观主张“学生在做中学习”。陶行知和杜威也都提出“做中学、教学做合一”的理念。因此,在数学教学过程中,教师要合理创设并开展操作活动,给学生提供充足的时间和空间去动脑、动眼、动口、动 “Compulsory education mathematics curriculum standards” pointed out: “Effective mathematics learning activities can not simply rely on imitation and memory, hands-on practice, independent exploration and cooperation and exchange is an important way for students to learn mathematics. ” Constructivism teaching concept “students Learning while doing ”. Both Tao Xingzhi and Dewey also put forward the idea of ​​“doing middle school and teaching as one”. Therefore, in the process of mathematics teaching, teachers should reasonably create and carry out operating activities, providing students with sufficient time and space to move their brains, moving eyes, moving mouth and moving