Hi There,
My 12 year old son and I came across your page (http://cuip.uchicago.edu/~tjones/home/science/eq/page4.html) while researching geology for kids, more specifically volcanoes, he loves them!  I liked your site a lot because there is some really good information for him on there and he found a lot of other great material (not on the topic of volcanoes) that also appealed to him.  I try to support him in whatever it is he is interested in learning more about because I feel its important for him to enjoy and have fun in the process of learning new things, no matter what the subject may be.  I have book marked your page so that we can continue to use it as a learning tool, and I am also sending you another great article my son really likes. 
It has a lot of great information and resources on volcanoes!
Let me know if you like it, he would be very excited to see it added to your page!  Haha :)
The article is http://www.fireplacespot.com/kids-volcano-facts, I hope you find it helpful.
Best Wishes,
Becky