jmj403 introduced this website on her blog. What a fun and engaging (and humbling) way to learn about the periodic table. It is too old for my kids right now, but not for exercising my own gray matter!
A site I don’t want to forget
May 3rd, 2007 by leigharev2
That looks HARD! LOL! I'm going to save it though because Alek (10) is going to do chemistry this year. THanks!
Love, Alyssa