数轴上的数
Numbers on a number line
将整数表示为数轴上的长度，并在数轴图上表示100以内的和与差。
Represent whole numbers as lengths on a number line and represent sums and differences within 100 on a number line diagram
学习证据 / Evidence
- 在刻度等距的数轴上放置整数
- 将加法表示为数轴上的向前跳（例如：38 + 27 用跳格表示）
- 将减法表示为数轴上的向后跳
- Place whole numbers on a number line with equally spaced points
- Show an addition as a jump forward on the number line (e.g. 38 + 27 shown as jumps)
- Show a subtraction as a jump backward on the number line
评估问题 / Assessment
{{name}}能在数轴上标记数字，并展示他们相加或相减时会有什么变化吗——例如，从48开始向前跳35格？
Can {{name}} mark numbers on a number line and show what happens when they add or subtract — for example, jumping forward 35 places from 48?