How clever I was to buy this

I'm feeling very clever to have bought these place mats of the periodic table:

http://www.theodoregray.com/PeriodicTable/Posters/index.html.



We have them on our kitchen table, and the girls can't get enough of perusing them. They have great descriptions on the back. You can get it as a poster if you want, too. And they take PayPal so it was like not paying anything at all for them. (Right? Isn't that the way it works?)