I just found this article about NY-based Codecademy that can help you conduct a code class for your kids – click on the second link in the article, “mini-Codecaemies”, to sign up for a kit.  Or click on the first link, “Codecademy”, to learn yourself!  Looks like a fun way to learn code.

http://www.thedigitalshift.com/2012/09/k-12/codeacademys-free-kits-help-kids-and-educators-learn-to-code/