This is a super easy, super fun activity where students discover the interior angle measurements of different polygons. I start with the triangle (see photo) and then have them work in groups to prove other interior angle measurements.

Collaboration and communication in the math classroom is so important and this is an easy way to do it. Teams can then do a 1-2 minute presentation which helps develop their public speaking skills.

CCSS: 4.MD.5; 4.MD.5; 4.MD.7