立体图形（5岁以上）
3-D shapes (age 5+)
用日常语言描述边、角和其他特征，来分析和比较平面图形与立体图形
Analyse and compare 2-D and 3-D shapes using informal language to describe sides, vertices, and other attributes
学习证据 / Evidence
- 数出图形的边和角
- 比较三角形和长方形的边数
- 描述正方体有“正方形的面”和“角”
- Count the sides and corners of a shape
- Compare a triangle and a rectangle by number of sides
- Describe a cube as having 'square faces' and 'corners'
评估问题 / Assessment
{{name}}能描述两个形状的不同之处吗？例如，解释三角形有3个角和3条边，而正方形有4个角和4条边。
Can {{name}} describe what makes two shapes different — for example, explaining that a triangle has 3 corners and 3 sides while a square has 4 of each?