Purple Mash provides some excellent computing opportunities, however if you want something a bit different, Scratch provides a platform for children (and adults) to learn programming. You do have to sign up for a free account, so adults may need to create the log-ins. If you are interested, click on the icon.
Kodu lets kids create games on the PC and Xbox via a simple visual programming language. Kodu can be used to teach creativity, problem solving, storytelling, as well as programming. Anyone can use Kodu to make a game; young children as well as adults with no design or programming skills.
Kodu for the PC is available to download for free.
Click here for more information.