It sounds like a speech impediment, but is much more fun.
My 11 yr old daughter was doing a science project for school, so decided to build an orrery as part of it.
Here is the finished product, it is a great educational tool and she really enjoyed studying the gearing as much as using the final product.
She timelapsed part of the construction as well.
http://www.youtube.com/watch?v=bqE52_TGbI0
All in all it was a great project to work on with her.