Donors Choose: http://www.donorschoose.org/homepage/main.html
Education World http://www.education-world.com/
Rubistar (for writing rubrics) http://rubistar.4teachers.org/index.php
BrainPOP: (really cool video lessons): http://www.brainpop.com/
Teachnology: http://www.teach-nology.com/
Quia (online practice, quizzes, games) http://www.quia.com/web
Petes Power Point Station: http://pppst.com
Watch Documentaries: http://www.snagfilms.com/
Online Basic Skills Games (Tons of interactives here!) http://classroom.jc-schools.net/basic/
Free Clip Art by Phillip Martin: http://www.phillipmartin.info/clipart/homepage.htm

Wolfram Alpha http://www.wolframalpha.com/
Sqoolquarium: http://www.sqoolquarium.com
Spelling City:http://www.spellingcity.com/