Are you as smart as a fourth-grader?
Apparently I'm not. Henry came home the other day with this. 
I studied it for some time and had NO IDEA what it represented. Once he explained it, it made sense, though I can't understand how it teaches any math principle in a usable way. Hello! Can parents get a cheat sheet here?!
So, my dear mathophile readers, here's my challenge: Explain what those diagrams are illustrating and win a DARLING HANDMADE CATNIP TOY. For either you or your cat. If you don't have a cat, I'll fill it with a more human-friendly hallucinogen. Just kidding, Homeland Security! (They monitor this blog, you know. I'm a known radical. Atheist, black kid, suspiciously single...)
Here are the rules. Figure it out, post your best guess answer. If y'all are stymied, I'll publish a hint on Thursday. First person to figure it out gets the prize. And the admiration and awe of your fellow blog readers. Priceless.
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