About.Com
http://about.com/

A network of sites which includes more than 650 highly targeted environments, each overseen by a professional guide. About.com is an easy and fast way to find whatever is it that you want from the Internet.

B. J. Pinchbeck's Homework Helper
http://www.bjpinchbeck.com/

Experts.com
http://www.experts.com/

Experts.com is a worldwide resource for a rich variety of experts who are authors, consultants, specialists, and experienced expert witnesses.

HomeworkCentral.Com
http://www.homeworkcentral.com/

An online learning environment made up of links to knowledge on the Internet. Sites are added every day.

Infoplease Homework Center
http://www.infoplease.com/homework/

Pitsco's Ask an Expert
http://www.askanexpert.com/

At this site you can find experts to answer your questions from the Amish lifestyle to zoo keeping. You can select from 12 categories with more than 300 Web sites and E-mail addresses.