Mathematics (2019) Grade(s): KG

MA19.K.23

Use simple shapes to compose larger shapes.

COS Examples

Example: Join two triangles with full sides touching to make a rectangle.

Unpacked Content

Knowledge

Students know:
  • 2D and 3D shapes (triangle, square, rectangle, hexagon, rhombus, circle, cube, cylinder, sphere, cone).

Skills

Students are able to:
  • Combine simple shapes to form larger shapes.

Understanding

Students understand that:
  • geometric shapes can be composed of and decomposed into smaller shapes.
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