2011版新课程标准中明确指出“学生的学习应当是一个生动活泼的、主动的和富有个性的过程。动手操作实践是学习数学的重要方式。”小学生以形象思维为主,又好动,让学生在课堂上动手操作实践是一个手脑并用的过程,是解放数学知识抽象性与小学生思维形象性之间矛盾的一种有效手段,同时,丰富的情感体验可把客观的“要我学”内 2011 version of the new curriculum clearly states that “student learning should be a lively, proactive and personalized process. Hands-on practice is an important way to learn mathematics.” “Primary thinking to the image of the students, and active It is an effective way to liberate the abstraction between mathematical abstraction of mathematics and the thinking image of primary school students, at the same time, the rich emotional experience can turn the objective I learn ”inside