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分数具有表示分率和具体数量两种意义,这是由于单位“1”具有两种不同的意义。统编教材六年制十册第53页提出:“上面讲的单位‘1’,不仅可以表示一个东西,一个计量单位,也可以表示由一些物体组成的整体,如一块田,一堆苹果,一班学生等。”当单位“1”表示一些物体组成的整体“1”时,把它平均分成几份,表示这样的一份或几份的数,只能表示这个整体“1”的几分之几。例如把4
The score has two meanings indicating the fractional rate and the specific number because the unit “1” has two different meanings. The compilation of six-year ten-year compulsory textbooks on page 53 states: “The unit 1 mentioned above can not only represent one thing, one unit of measure, but also represent a whole consisting of objects such as a field, a pile of apples, A class of students, etc. ”When the unit“ 1 ”indicates the overall“ 1 ”of some objects, it is equally divided into several, indicating that the number of such copies or copies can only indicate the number of the whole“ 1s ” A few For example put 4