Tux Typing is a free application to help your child learn to type on a keyboard. The lessons are presented as games with Tux, a funny penguin (totally influenced by Linux). The application is available for Windows, Mac and Linux. Unfortunately, the Mac version is only available for PPC processor. In addition to the lessons, the games include fish cascade and comet zap. The application is developed by Tux4Kids, a company that develops high-quality software for kids.
TuxMath is an arcade game that helps kids practice their math facts. The main goal is to make it effective and fun! Check out, and download this game here.