用实物模拟现实问题
Using objects to model real problems
使用物品、图画或简单的算式来表示现实世界中的情境（早期的数学建模）
Use objects, drawings, or simple number sentences to represent a real-world situation (early mathematical modelling)
学习证据 / Evidence
- 画一幅画或用物品来表现一个涉及数数或比较的简单现实情境
- 写出或口述一个算式来描述现实情境（例如“我有5个苹果，吃了2个”）
- 使用这个模型来回答关于该情境的问题
- Draw a picture or use objects to represent a simple real-world situation involving counting or comparing
- Write or dictate a number sentence to describe a real-world situation (e.g. 'I had 5 apples and ate 2')
- Use the model to answer a question about the situation
评估问题 / Assessment
如果你向{{name}}描述一个简单的现实情境，比如“篱笆上有3只鸟，又飞来2只”，{{name}}能写出像 3 + 2 = 5 这样的算式来表示这个情境吗？
If you describe a simple real-life situation to {{name}} — like "there are 3 birds on a fence and 2 more land" — can they write a number sentence like 3 + 2 = 5 to represent it?