I have seen this in so many places and done so many different ways... I don't know who originally thought of it in order to give proper credit, but here's my version. The munchkins are having a great time using domino manipulatives and parking them in the right spot. They love stacking them up and trying to keep them balanced. LOL! I need to find a way to make this more challenging so that I can differentiate their learning, but right now it's perfect!
Enjoy your free copy here! :)