I like teaching the kids programming at this age, because it teaches them so much about computers. Are the cables connected? What is your program telling the machine to do? What do we need to do to get that result?
There are not a lot of web resources for the Lego WeDo yet. The Lego web site has instructions for using WeDo with the programming language Scratch, which you can download for free at Scratch. A Scratch Wiki is available where students and teachers can add their ideas. A printable handout for activities involving both Scratch and WeDo is also available. A blog which provides more WeDo designs is WeDoBots. Don’t forget to check out Geek Dad’s Blog, too.
I will put up this material on my web page at www.dwna.net in addition to the material I have up there now, so please check back from time to time. If you care to email me, I’m at lwallin at dwna.net, or choirmemberil at gmail.com, which I don’t check as often. I will also give a DVD to the Center for Gifted of all the pictures and videos we made. I am including the resource page I made for Mindstorms, which is the program used by third grade and up.