http://www.education.com
2. Classroom Connect
http://www.classroom.com
3. Teachers.Net
http://www.teachers.net
4. Educator's Reference Desk
http://www.eduref.org
5. ENC Online
http://www.enc.org
6. Education World
http://www.education-world.com
7. Education Place
http://www.eduplace.com
8. GEM
http://www.geminfo.org
9. Educators Network
http://www.educatorsnet.com
10. TIMESAVERS for TEACHERS
http://www.timesaversforteachers.com