Grade 1 · Geometry

CCSS.MATH.CONTENT.1.G.A.1

Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.

Read this standard on the official Common Core site

Lessons that teach this standard

• What Makes a Shape: Sides, Angles and Faces

  Tell what names a shape, like being closed with three sides, from what does not, like color and size; then name quadrilaterals, pentagons, hexagons and cubes.