Grade 1Geometry

1.G.A.1

Know which properties actually make a shape what it is — sides, not colour.

Worksheets for this standard 3 topics

Name & Describe 2D Shapes2 ways

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Sort 2D Shapes by Attribute4 ways

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Name & Describe 3D Shapes2 ways

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The standard, officially

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.

Builds on

K.G.B.4Compare shapes by sides and corners K.G.B.5Build and draw shapes

Leads to

2.G.A.1Recognize and draw shapes