减法：拿走或分开

理解减法就是从一个整体中拿走或分出一部分，数一数还剩多少。

Understand subtraction as taking away or separating from a group to find how many remain

学习证据 / Evidence

• 用实物演示“拿走”的过程，并说出还剩多少。
• 表演一个“取走”的情境（例如5块饼干，吃掉2块，还剩几块？）。
• 解释减法就是算出还剩多少。

• 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

评估问题 / Assessment

如果{{name}}有9块饼干，吃了3块，他们是否理解减法就是拿走一些，并且能说出还剩6块饼干？

If {{name}} has 9 biscuits and eats 3, do they understand that subtracting means taking some away — and can they tell you 6 biscuits are left?