RootsEDU小学课程图谱与学习系统
数学 / Mathematics 分数 / Fractions CONCEPTUAL 7 至 8 岁

将图形分成相等的部分(7岁以上)

Splitting shapes into equal parts (age 7+)

将圆形和长方形分成两份、三份或四份相等的部分;用“一半”“三分之一”“四分之一”来描述这些部分;认识到同一个整体分出的相等部分不一定形状相同。

Partition circles and rectangles into two, three, or four equal shares; describe shares as halves, thirds, and fourths; recognise that equal shares of identical wholes need not have the same shape

学习证据 / Evidence

评估问题 / Assessment

如果用两种不同的方法把一个长方形分成三等份,一种分成三条长条,另一种分成三个正方形,{{name}}能看出虽然这些部分的形状不同,但它们都是同样大小的三分之一吗?

If you cut a rectangle into thirds in two different ways (three strips vs three squares), can {{name}} recognise that both give equal thirds — even though the pieces look different?

先修关系图 / Learning path