一共有多少？
How Many in Total?
基数原则：数一组物品时，最后说出的数字代表这一组物品的总数，无论物品怎样排列，也无论按什么顺序数，总数都不变。
Cardinality principle: the last number said when counting a set tells how many objects are in the set, regardless of arrangement or order counted
学习证据 / Evidence
- 数完一组物品后，能用最后说出的数字回答“有多少个？”
- 理解重新排列物品不会改变总数
- 理解按不同顺序数，总数是一样的
- After counting a set, answer 'how many?' with the last number stated
- Understand that rearranging objects does not change the count
- Understand that counting in a different order gives the same total
评估问题 / Assessment
如果{{name}}数出7辆玩具车，然后你问“所以这里有多少辆车？”，他会直接说“7”吗，还是会从头再数一遍？
If {{name}} counts out 7 toy cars and you ask "so how many cars are there?", do they say "7" straight away — or do they count them all again from the start?