She's learning how to use a better grip on the pen now that she's four and a half, and she's drawing some of the molecules she learned from SimpleScience.net and Ein-O's molecule kit. Don't know where she learned about Lithium -- some of her books have Periodic Tables in them, and she must have seen the atomic number in there. I just looked up Lithium and it actually has 4 neutrons, but I give her credit for getting the protons and electrons right.
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