Instructor magazine
http://www.scholastic.com/Instructor
Offers a host of links to not only products published by Scholastic, but also lesson plans, indexed by grade level. When searching for products, enter "history" in the Search box located at the top right corner of the webpage.
Social Studies School Service
http://www.socialstudies.com
Over 12,000 materials available for sale from books, lesson/unit plans, simulations, DVD’s, videos, computer programs, power point lectures, posters and artifacts.
