Homework Spot
www.homeworkspot.com

Awesome Library
http://www.awesomelibrary.org/

Multnomah County Library, Oregon
http://www.multcolib.org/homework/index.html

Kid Info
http://www.kidinfo.com/SchoolSubjects.html

PJ Pinchbeck
http://www.bjpinchbeck.com/index.html

World Almanac for Kids
http://www.worldalmanacforkids.com/

Free online dictionary/thesaurus
 
Merriam-Webster Online
http://www.merriam-webster.com/

The Free Dictionary
http://www.thefreedictionary.com/

Awesome Library
http://www.awesomelibrary.org/  

High School Ace
http://highschoolace.com/ace/ace.cfm

Homework Spot
www.homeworkspot.com

Awesome Library for Teens
http://www.awesomelibrary.org/student5.html