Here is a set of 12 Pentominoes for the MakerBot Academy Math Manipulative Challenge. #MakerBotAcademyMath My daughter read the book Chasing Vermeer and in that book, they use Pentominoes. So I thought what better way to blend Math and reading with a set of these! I drew these in Autodesk Inventor, so I have the .ipt files if anyone needs those also. I don't believe I can upload those here though. Here is a link to what Pentominoes are: http://en.wikipedia.org/wiki/Pentomino. And here is the link to the Chasing Vermeer site: https://www.scholastic.com/blueballiett/chasingvermeer.htm Have Fun with them!