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.
Teaching guide
What students learn
Tell the difference between attributes that define a shape, like number of sides, and ones that do not, like colour.
How to teach it
Sort shapes by their number of sides, tracing each side and counting once. Use words like straight, curved and corner.
Worked example
How many sides does a octagon have?
Answer: 8
Generated and checked in code, so it is correct.
Watch out for
Counting a corner as a side, or losing count on shapes with many sides.