数轴上的数
Numbers on a number line
选择并使用合适的工具和表示方法（如数轴、百数表、直尺、部分-整体模型）来帮助解决问题。
Select and use appropriate tools and representations (number lines, hundred squares, rulers, part-whole models) to support problem-solving
学习证据 / Evidence
- 选择数轴或百数表来帮助进行两位数的加减运算
- 当问题需要测量长度时，会选择直尺
- 能解释为什么某种表示方法（例如数轴和小方块）对特定问题更有帮助
- Choose a number line or hundred square to support adding or subtracting two-digit numbers
- Select a ruler when a problem requires measuring length
- Explain why one representation (e.g. a number line vs cubes) is more helpful for a particular problem
评估问题 / Assessment
当{{name}}在解决数学问题时，他们会选择有用的工具——比如用数轴做加法，或用百数表接着数——而不是总在心里算吗？
When {{name}} is tackling a maths problem, do they choose a useful tool — like a number line for addition or a hundred square to count on — rather than always working in their head?