Print this out poster size (change printer options to 2x2 or 3x3).
Laminate for repeated use.
I am using this to introduce CC 2.G1. Together the children and I will add labels to the poster.
Print out copies on regular paper and hand to children to have them label on their own.
(labels: shape name, number of sides, corners, etc.)
Then give the students geo boards to practice building the planar shapes.