This is a bit late but I wanted to list some of the things we are using to study about Thanksgiving and that time period. I'm not really sure how I found this blog that got me started on all this but I am giving her credit now. Learning Sharing Caring has some great lesson plans and I found most of my information from her plans. Be sure and look through the Oct. archives for all the links.
Scholastic Interactive site on Thanksgiving
Plimoth.org Interactive Website
Enjoy these resources to teach your kids about Thanksgiving!