Thanks Portia, It looks fun, I am actually also searching sth similar for him to build some chemical structure, as he is so into periodic table right now.
My little chemist requested a play date with Theo Gray
, so your son may be interested in any book by him as well as the TV special "Hunting the Elements", Basher chemistry and element books, and an app called Alchemy or Alchemic.
Molymod required a little too much hand strength for my DS, but we've had luck with play dough, straws, pipe cleaners, marbles - my floor is littered with models!
http://www.pbs.org/wgbh/nova/physics/hunting-elements.html
