A Science Odyssey
A fun, interactive chronicle of scientific achievements of the 20th century. 
http://www.pbs.org/wgbh/aso

Bill Nye: The Science Guy
Explore Bill's collection of demos, labs, and "top 10 links!"
 http://www.nyelabs.com

OSHA Safety Guidelines
Access a listing of all Occupational Safety and Health Administration (OSHA) Standards.
http://www.osha.gov

Franklin Institute
Participate in on-line exhibits and web-based units of study.
http://www.fi.edu/learn/learners.php

Science Museum Oklahoma 
Offers a diverse collection of interactive and historic exhibits and programs for visitors of all ages, backgrounds and interests. 
http://www.sciencemuseumok.org

Cells Alive
Information, with animated images, about cells, bacteria, and parasites.
http://www.cellsalive.com

Scrstec Explorer
Incredible labs and lesson plans for K-12 science and math! Extensive lists for the natural sciences!
http://explorer.scrtec.org/explorer

Access Excellence
Fantastic biology and biotechnology lesson plans and projects! A favorite among secondary teachers! 
http://www.accessexcellence.org

Journey North
Get your students involved in a global on-line study of animal migration!
http://www.learner.org/jnorth

Classroom Connect
On-line projects, K-12 Internet links, search engines and more!
http://corporate.classroom.com
 
NASA
Earth and space science research, activities and photos are found here! 
http://www.nasa.gov

Physical Science Resource Center
This site contains labs, demos and problems of the month!
http://www.psrc-online.org

Exploratorium
Take a virtual visit to this popular art and science museum. Great interactive exhibits and huge library of links! 
http://www.exploratorium.edu

WebTeacher
Learn the basics of the Internet, communicate with other teachers, access curriculum content, or create your own homepage! 
http://www.webteacher.org