《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习数学的重要方式。”可见,动手操作是小学数学教学中一种重要的教学形式,也是促进学生进行自主探索的主要手段。 “Compulsory education mathematics curriculum standards” pointed out: “Effective mathematical learning activities, can not simply rely on imitation and memory. Hands-on practice, independent exploration and cooperation and exchange is an important way to learn mathematics.” "Visible, hands-on operation of primary mathematics teaching An important teaching form, but also to promote students to explore the main means of self-exploration.