用不同单位测量
Measuring with different units
用两种不同的长度单位测量同一物体的长度，并说明测量结果与所选单位大小的关系
Measure the length of an object using two different length units and describe how the measurements relate to the size of the unit chosen
学习证据 / Evidence
- 用厘米和英寸分别测量一张课桌，并比较两个数值
- 说明使用较小的单位测量得到的数值较大
- 预测用厘米测量的结果会比用英寸大还是小
- Measure a desk in both centimetres and inches and compare the two numbers
- Explain that measuring with a smaller unit gives a larger number
- Predict whether a measurement in centimetres will be greater or less than in inches
评估问题 / Assessment
如果{{name}}用厘米和英寸分别测量同一本书，他们能解释为什么两次测量出的数字不同，而书的大小并没有改变吗？
If {{name}} measures the same book in centimetres and then in inches, can they explain why the numbers are different even though the book hasn't changed size?