We have several Basher Books, as well as the Elements flashcards...
I have to say they really aren't our style...we are both chemists, so maybe we are too picky regarding the chemistry one and flashcards specifically, but found them too stylized:
'His illustration style (Simon Basher) is described as graphic surrealism; a synergy of European graphic design and Japanese character creation'
If this is a style that your LO would enjoy, then they are very well-done. If not, here are a few more of our favorites!
We LOVE Theodore Gray and his work on The Elements...a fantastically detailed book, and there are wonderfully detailed 'flash cards' as well:
http://www.amazon.com/gp/product/1603761985/ref=gno_cart_title_5If you are looking for something a bit simpler, Alex received these in her Christmas stocking last year with great success:
http://www.thinkgeek.com/product/ecc4/ThinkGeek also has these great wooden Periodic Table blocks that we got for Alex when she was a few months old
http://www.thinkgeek.com/product/e5f7/?pfm=Search&t=periodic%20table%20building%20blocksI have just bought a fantastic game with all sorts of variations and games included, which has element cards as well...I bought it as an Xmas prezzie for DH and I, although I am hoping to use it with Alex as well
It has won all sorts of awards...
http://www.amazon.com/gp/product/B0049KOC74/ref=gno_cart_title_4