Mathematics
Addition & Subtraction
Conceptual
4–6 yrs
Subtraction as taking away or separating
减法的取走与分离概念
Description
Understand subtraction as taking away or separating from a group to find how many remain
Mastery Evidence
- Model 'taking away' with physical objects and say how many remain
- Act out a 'take from' situation (e.g. 5 biscuits, eat 2, how many left?)
- Explain that subtraction means finding how many are left
Assessment Prompt
If your child has 9 biscuits and eats 3, do they understand that subtracting means taking some away — and can they tell you 6 biscuits are left?
