Free Resources for Educational Excellence (or FREE, for short)

[Via The Big Deal Book]
Free Resources for Educational Excellence (or FREE, for short) is an
extensive compilation of free resources from federal agencies. Browse the
Subject Map to review topics, type in a keyword to search the entire
database or click on the featured links for current topics of interest. Sign up
for the FREE RSS to get notification several times a week of new resources
being added to the more than 1,500 existing resources on the site.
Web: http://www.free.ed.gov/