比较分数
Comparing fractions
比较和排列单位分数，以及分母相同的分数
Compare and order unit fractions, and fractions with the same denominator
学习证据 / Evidence
- 把1/2、1/3、1/4、1/5从大到小排列
- 解释分母越大，单位分数就越小
- 比较2/5和4/5，并说明4/5更大，因为它有更多个五分之一
- Order 1/2, 1/3, 1/4, 1/5 from largest to smallest
- Explain that a larger denominator means smaller unit fractions
- Compare 2/5 and 4/5 and explain that 4/5 is larger because it has more fifths
评估问题 / Assessment
如果{{name}}吃了一块蛋糕的3/8，而朋友吃了同一块蛋糕的5/8，他们能告诉你是谁吃得多吗？并且能把这些分数从小到大排列吗？
If {{name}} has eaten 3/8 of a cake and a friend has eaten 5/8 of the same cake, can they tell you who has eaten more — and put those fractions in order from smallest to biggest?