CCSS K.G.A.3 Worksheets
Kindergarten · Geometry
Tell the difference between two dimensional flat shapes and three dimensional solid shapes.
Below are free printable worksheets that support K.G.A.3. 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 two dimensional flat shapes and three dimensional solid shapes.
How to teach it
Sort a mixed pile of flat shapes and solid objects into two groups, then explain the rule: a 2D shape lies flat with no thickness; a 3D shape takes up space and you could hold it.
Worked example
I have 6 sides, just like a honeycomb cell. What shape am I?
Answer: hexagon
Generated and checked in code, so it is correct.
Watch out for
Confusing a picture of a shape (flat, on paper) with the solid object it represents, since a drawing of a cube is itself 2D.