Getting started with a new kind of computer is challenging. David Thornburg helps us figure out the XO user interface Sugar by explaining that it was designed to suit how kids perceive the world. Read this post, but more importantly, read Dr. Thornburg's paper! Illuminating!
Reinventing Project-Based Learning: http://reinventingpbl.blogspot.com/2008/01/enough-sugar-in-your-edu...
Dr. Thornburg's paper: Is There Enough Sugar in Your Educational Technology Diet? http://www.scribd.com/doc/1878618/Sugar