小学数学新课程标准中指出,提倡自主学习,学生的活动应当是一个生动活泼的主动而富有个性的过程。因此,数学教学就应当是最大限度地启发学生积极地进行数学实践活动的过程。应让学生高高兴兴地进入数学世界,在探索中激起兴趣,培养学生健康活泼的个性,创建和谐活跃的课堂气氛,从发现中寻求快乐,主动地获取知识,从而体会数学的使用价值及“做”数学 Primary school mathematics curriculum standard pointed out that to promote self-learning, student activities should be a lively and active and full of personality process. Therefore, mathematics teaching should be to maximize the process of inspiring students to actively carry out mathematical practice. Students should be happily entered the mathematical world, aroused interest in the exploration, cultivate students healthy and lively personality, create a harmonious and active classroom atmosphere, seek happiness from the discovery, take the initiative to acquire knowledge, in order to understand the value of the use of mathematics and “Do ” math