Explore shape attributes with young geometers as they sort nine shapes based on their corners. Scholars determine whether or not each shape has a square corner, drawing it in the appropriate space accordingly. They are encouraged to use straight lines, so consider handing out rulers beforehand. An index card is another good tool to help pupils verify whether or not a shape has a truly square corner. Can anyone find an easy way to create a perfectly square corner in the shapes they draw? 

Common Core

2.G.A.1