单位分数
Unit fractions
认识、找出并写出一组物体中的分数:包括分母较小的单位分数和非单位分数。
Recognise, find, and write fractions of a discrete set of objects: unit fractions and non-unit fractions with small denominators
学习证据 / Evidence
- 把12个物体平均分成4组,找出其中的1/4。
- 找出12个物体的3/4。
- 写出一个集合中涂色部分或选中部分所占的分数。
- Find 1/4 of 12 objects by dividing into 4 equal groups
- Find 3/4 of 12 objects
- Write the fraction of a set that is shaded or selected
评估问题 / Assessment
如果书架上有15本书,{{name}}能算出其中的三分之二是多少,并通过把这些书平均分成三堆来验证吗?
If there are 15 books on a shelf, can {{name}} work out how many two-thirds of them is — and check by grouping the books into three equal piles?