《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。教师在教学中放手让学生在有限的时间和空间里参与实践操作,体验知识的形成过程,把枯燥的讲授过程变为动态的探索过程,从而提高数学教学的有效性。 Mathematical Curriculum Standards states: “Effective mathematical learning activities can not rely solely on imitation and memory.” Hands-on practice, exploration and cooperation and cooperation are important ways to learn mathematics. “” It can be seen that hands-on teaching is one of the primary schools’ teaching of mathematics An important teaching form, but also to promote students to explore the main means of self-exploration. Teachers let go in teaching so that students can participate in practical operation in a limited time and space, experience the formation of knowledge, turn boring teaching process into a dynamic exploration process, and improve the effectiveness of mathematics teaching.