Comment by yShrike

Here are some ideas (and we've used pretty much all of them)

Alice, from Randy Pausch (http://www.thelastlecture.com/) team http://alice.org/

Scratch http://scratch.mit.edu/

Codea--programming on the iPad. I highly recommend getting a keyboard. http://twolivesleft.com/Codea/

Art of Problem Solving has online programming classes http://www.artofproblemsolving.com/School/courseinfo.php?cou...

Good luck!