Are you a parent of a 9-12 year old girl. You may well be reluctant to have them roaming the net, there is so much that is bad on on it. Here is a good website just for them.

Powerful Bones, Powerful Girls looks like a fun site to me but I am not a 9-12 year old girl so what would I know? Anyway it is an appropriate site for them to explore. It aims to establish lifelong, healthy habits that build and maintain strong bones in a fun manner.