Mathematics·Geometry·procedural
Composing Shapes
Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, quarter-circles) to create composite shapes, and compose new shapes from the composite shape
Suggested ages 6–7
Learning journey
Your child is discovering the world of shapes — identifying properties of 2D and 3D shapes, learning how to combine shapes to make new ones, and describing positions and movements using mathematical language.
Evidence of understanding
- 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 Composing Shapes use flat shapes like triangles and rectangles to fit together and make a new larger shape — like a puzzle?
Standards alignment
1.G.2US · ccss-math
Compose two-dimensional and three-dimensional shapes
Common Core State Standards for Mathematics · 1