CCSS 1.G.A.1 Worksheets
Grade 1 · Geometry
Tell the difference between attributes that define a shape, like number of sides, and ones that do not, like colour.
Below are free printable worksheets that support 1.G.A.1. Print them as PDFs, or generate a fresh one. Every math answer key is computed in code, so it is never wrong.
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Deliver a whole lesson on 1.G.A.1 from a textbook-grade teaching unit, with a hook, worked examples, diagrams, misconceptions, and an exit ticket.
Teaching guide
Tell the difference between attributes that define a shape, like number of sides, and ones that do not, like colour.
Sort shapes by their number of sides, tracing each side and counting once. Use words like straight, curved and corner.
Generated and checked in code, so it is correct.
Counting a corner as a side, or losing count on shapes with many sides.