Qimo is here to help.
Qimo Linux is based on Ubuntu, but it's designed for children over the age of 3. It features large cartoon-like program icons and comes with a bunch of open source and educational games including Tuxmath, Tuxpaint, Tuxtype (a typing game) and even some games that don't have Tux in them like GCompris and Childsplay.
Unlike Edubuntu, Qimo is designed for home use, not classroom use. The operating system can be run from a LiveCD or installed. Qimo uses a simple interface based on Xfce.
[via instant fundas]