分数几乎与自然数一样古老。人类文明的初期,由于测量和均分的需要,人们引入并使用了分数。小学阶段分数的学习属于数与代数领域。从整数到分数是数概念的一次扩展。无论在意义、读写法及计算方法上,分数与整数都有很大的差异。相对于整数而言,分数概念较为抽象,而且有多种理解方式。并非是可以通过计数互动得到的一个数,而是一个代表了两个量关系的相对量,并且可以从部分与整体、测量、 Scores are almost as old as natural numbers. In the early days of human civilization, because of the need to measure and divide, people introduced and used scores. Elementary grade fractional learning belongs to the field of numbers and algebra. From integer to fraction is an extension of the concept of numbers. In terms of meaning, literacy and calculation methods, scores and integers are very different. Relative to the integer, the concept of scores is more abstract, and there are many ways to understand. It is not a number that can be obtained by counting interactions but a relative quantity that represents the relationship between two quantities and can be measured in part and in whole,