http://www.convert-me.com/en/

A conversion table for weight, time, length, area, speed, pressure, and other things.

http://www.figurethis.org

Challenges families or classrooms to solve math and spatial problems; great for the "non-mathematician."

http://www.coolmath.com

This site is fully interactive and allows the user to sharpen basic math skills, play math-related games and explore new math concepts.

http://www.nasscom.org/

The national association of software & service companies is the premier trade body & the chamber of commerce of the IT software & services industry. Read success stories of key software & services companies here & buy Nasscom publications, research reports, & register for industry events.

http://www.spacetoday.org

The site bills itself as covering space from earth to the edge of the universe. Learn about space shuttles, space stations, satellites, astronauts, space history, the solar system, & deep space.

http://www.solarviews.com

Presents a vivid multimedia adventure unfolding the splendor of the sun, planets, moons, comets, asteroids, and more. Discover the latest scientific information, or study the history of space exploration, rocketry, early astronauts, space missions, and spacecraft through a vast archive of photographs, scientific facts, text, graphics, and videos. Available in English, Spanish, Portuguese, French, and German.

http://www.backyardnature.net

Naturalist Jim Conrad provides a broad range of nature activities and information, from the basics of observing nature to classifying plants and creatures.

http://whyfiles.org

A project of the National Institute for Science Education, this site offers well-researched and clearly written investigations of current topics in science; a new story is posted every other week. The site also includes a small but worthy collection of scientific images.

http://volcano.und.nodak.edu/

Could you outrun a lava flow? How do you become a volcanologist? Are there legends about volcanoes? Find details about volcanoes, their eruptions, and more. From the University of South Dakota.

http://mineral.galleries.com/default.htm

Explore rocks and minerals. Includes pictures.

http://www.isd77.k12.mn.us/resources/cf/SciProjIntro.html

Do you have to do an experimental science project? This site provides tips for conducting the experiment and using the scientific method.

http://www.hurricanehunters.com

Photos and information from the 53rd Weather Reconnaissance Squadron, known as the Hurricane Hunters of the Air Force Reserve. Especially cool is the Cyberflight into the Eye.

http://www.tinyplanets.com

Bing and Bong, aliens from the Tiny Planets, offer games related to technology, nature, light and color.

http://www.invent.org/hall_of_fame/1_0_0_hall_of_fame.asp

Learn about famous and not-so-famous inventors.

http://www.enchantedlearning.com/inventors

Learn how and when common items were invented, from adhesive tape to the zipper. Includes entries for both inventions and inventors.

http://www.crlsresearchguide.org

List of 23 basic steps in the research process with links to more help and explanations.