一一对应点数
One-to-one counting
点数物体时的一一对应：每个物体都恰好配对一个数词。
One-to-one correspondence when counting objects: each object is paired with exactly one number name
学习证据 / Evidence
- 一边说数字，一边正好指向或触摸每个物体一次
- 数一组物体时，不跳过任何一个，也不重复数
- 能发现别人把某个物体数了两次的错误
- Point to or touch each object exactly once while saying number names
- Do not skip objects or double-count when counting a set
- Recognise an error when someone counts an object twice
评估问题 / Assessment
如果{{name}}在数一堆葡萄，他们会不会在说每个数字时，正好触摸或指向每颗葡萄一次——既不跳过任何一颗，也不把同一颗数两遍？
If {{name}} is counting a pile of grapes, do they touch or point to each one exactly once as they say each number — without skipping any or counting the same one twice?