将图形分成更多等份
Decomposing a shape into more equal shares
理解将一个图形分成更多等份后，每一份会变得更小。
Understand that decomposing a shape into more equal shares creates smaller shares
学习证据 / Evidence
- 解释同一块披萨的四分之一比二分之一小
- 说明四等份的每一块比二等份的每一块小
- 比较同一图形的二等份和四等份的大小
- Explain that a quarter of a pizza is smaller than a half of the same pizza
- Demonstrate that fourths are smaller pieces than halves
- Compare the size of halves and quarters of the same shape
评估问题 / Assessment
如果一块披萨分给2个人吃，然后同一个披萨分给8个人吃，{{name}}能解释为什么分给更多人时每一块会更小吗？
If a pizza is shared between 2 people and then the same pizza is shared between 8 people, can {{name}} explain why each slice is smaller when more people share it?