Mathematics
Geometry
Procedural
6–7 yrs
Composing Shapes
组合图形
Description
Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, quarter-circles) to create composite shapes, and compose new shapes from the composite shape
Mastery Evidence
- Combine two triangles to form a rectangle or larger triangle
- Put together half-circles and quarter-circles to form circles or new shapes
- Decompose a composite shape and describe which simpler shapes make it up
Assessment Prompt
Can your child use flat shapes like triangles and rectangles to fit together and make a new larger shape — like a puzzle?
Prerequisites 2
2-D shapes
需要先能识别二维图形，才能将其组合成复合图形
Combining Simple Shapes
一年级的二维图形组合延伸了幼儿园阶段组合简单图形的概念
Unlocks 0
No follow-up topics
