Dear all, You may have heard of the Khan Academy.
I believe that the kiddies might benefit from the short video lectures on the site - Totally Free Now has the backing of Bill Gates and Google I'd suggest watching this short video which appeared on 60 minutes last night best jc http://m.youtube.com/watch?v=zxJgPHM5NYI&desktop_uri=%2Fwatch%3Fv%3DzxJgPHM5NYI