抽象是数学学科的三大特点之一.从若干具体的事物出发,逐步抽象出数学概念和规律,然后再把这些知识运用到实际中去,往复循环,不断提高,这就是学习数学的一个认识过程.从幼儿园开始,我们就学习数学.那时学习的数都是与量联系在一起的:一个皮球,两个橘子,三个小朋友……把数和量? Abstraction is one of the three major characteristics of the mathematics discipline. Starting from a number of concrete things, it gradually abstracts the mathematical concepts and laws, and then applies these knowledge to the actual situation, reciprocating cycles, and continuous improvement. This is an understanding of learning mathematics. Process. From the beginning of the kindergarten, we learn mathematics. At that time, the number of learning is related to the quantity: a ball, two oranges, three children...put number and quantity?