This site is part of "gamification" trend in education, using the World of Warcraft game as the basis for a language arts curriculum. The learning materials are available as a free download, and there are many other resources as well, including some lessons in other subject areas.
A nice informational site where you can "see the world through children's eyes." Includes maps, g
Free art lessons for elementary ages.
Online reading, math, and spelling curriculum for elementary ages.
Complete math curriculum for jr. high and high school levels.
This subscription site has loads of resources for learning through children's literature.
A website with lesson plans, worksheets, labs, and activities on biology topics.