图形的一半和四分之一
Halves & Quarters of Shapes
将圆形和长方形分成两个或四个相等的部分,并用“一半”“四分之一”等词语来描述这些部分。
Partition circles and rectangles into two and four equal shares and describe them using the words halves, fourths, and quarters
学习证据 / Evidence
- 把一个圆形分成相等的两半。
- 把一个长方形分成四等份。
- 把整体描述为“两半”或“四个四分之一”。
- Divide a circle into two equal halves
- Divide a rectangle into four equal quarters
- Describe the whole as 'two halves' or 'four quarters'
评估问题 / Assessment
如果给{{name}}一个圆形披萨或一块长方形巧克力,{{name}}能把它分成四等份,并说出每一份都叫四分之一吗?
If you give {{name}} a round pizza or a rectangular chocolate bar, can they divide it into four equal pieces and tell you each piece is called a quarter or a fourth?