Being a teacher is hard work. Check out these links to make your life easier.

4Teachers (general resources)
http://www.4teachers.com/4teachframes.html

Afterschool.gov (afterschool programming)
http://www.afterschool.gov/

ERIC
http://www.ed.gov/prog_info/ERIC/index.html

FREE (Federal Resources for Educational Excellence)
http://www.ed.gov/free/

Library of Congress
http://lcweb.loc.gov/

My Virtual Reference Desk (everything you want to know about everything)
http://www.refdesk.com/

The Knowledge Loom
http://knowledgeloom.org/index.shtml

The WWW Virtual Education Library
http://www.csu.edu.au/education/library.html