The Academy of Natural Sciences: Discover what an “ichthyologist” does, create your own oyster reef, and complete a watershed crossword courtesy of this Philadelphia museum.
Air & Water, Inc.: Learning about the water cycle.
Ask Dr. Universe: Ask a science question or discover the answers to questions posed by other kids.
BBC Science and Nature: A variety of science topics, including games, quizzes and picture galleries.
Braincake: For girls 11-17 who are interested in math and science.
Carnegie Science Center: visit this Pittsburgh science museum from the comfort of your own home.
Cells Alive: Learn all about cells and see models of plant and animal cells.
Design a Rollercoaster: Adjust the heights of the hills and other aspects of a rollercoaster to make sure the car doesn't fly off the track!
Discover Engineering: Learn how important engineering is in the development of everyday objects (like snowboards!) and find out about what real engineers do!
Earth Science Enterprise: All about earth science, courtesy of NASA.
EcoKids: Enjoy games, activities, printable pages, and information about wildlife, science and nature.
The Electronic Zoo: Links to hundreds of sites, images and sounds involving animals (grouped by type of animal).
The Exploratorium: This site from the Exploratorium - a science museum in San Francisco - has information about the science of music, journeying to Mars, and sport science.
The Franklin Institute Online: Learn about everything from the human heart to airplanes to the weather, all on this one great site!
Funology: Explore "the science of having fun!"
How Stuff Works: describes how many of the items we use everyday function – divided into computers, automobiles, electronics, science, home, entertainment, health, money, travel and people.
Hurricanes!: This site from the Federal Emergency Management Agency (FEMA) will tell you all about these dangerous storms.
Illusions: This site has many terrific links to optical illusions.
Insect Lore: All about bugs.
The Inventor’s Hall of Fame: information about hundreds of inventions and their inventors.
Jack Star Gazer: PBS weekly star-gazing programs.
Kinetic City: Play science games, including Zap, All Systems Are Go, and Gravity Launch.
Mad Scientist Network: The laboratory that never sleeps contains a library, a search engine, and a chance to ask a scientist a question.
Monterey Bay Aquarium: activities and games involving creatures of the ocean and the places they call home; teacher programs, information on aquarium careers and the Student Oceanography Club.
NASA Kids: information, activities and games about NASA and space exploration.
The National Aviary: their education page has interactive activities, games and experiments involving birds; workshops and curricula for teachers.
Neuroscience for Kids: All kinds of information about the brain and the rest of the nervous system. Experiments and projects, too!
The Nine Planets: A Multimedia Tour of the Solar System: text, images, sounds and movies all about the Sun, the planets and the moons in our Solar System.
NOVA: Information in a variety of science areas including anthropology, disasters, exploration, flight, forensics, health, nature, space and technology.
Ology: Gives considerable information about areas of study (most of which end with the –ology suffix) categorized under broad headings of paleontology, astronomy, Einstein’s theories, biodiversity, genetics, and marine biology.
Pittsburgh Zoo and Aquarium: Description of educational services offered by the zoo and a wildlife page allowing students to look up information on the animals housed at the zoo.
Planetpals Earthzone: Explore the natural and human-created wonders of the world, take a weather quiz, and find out what you can do to save the Earth!
Pringles Pinhole: Turn a potato chip can into a simple camera!
Reekos Mad Scientist Lab: On this site, you'll find lots of experiments to try on lots of science topics.
Sandlot Science: Enjoy activities, projects and online exhibits, including several optical illusions.
Science Fair: Get lots of great ideas for science fair projects.
Science Museum of Minnesota: Information and at-home activities on lots of science topics.
A Sightseer’s Guide to Engineering: Lists a variety of engineering marvels throughout the United States, grouped by the state they are in.
Solar System Simulator: allows you to view celestial bodies in our Solar System as seen from a different heavenly body; select date and time and field of view as well.
Super Science Fair Projects: A guide to science fair projects, topics, experiments and ideas.
Try Science: 400 science centers around the world contribute to this ever-changing collection of online adventures and experiments you can try at home.
U.S. Department of Energy: The people at the Department of Energy provide you with lots of fun math and science games. Find out how many arithmetic problems you can solve in 60 seconds, play "Science Vocabulary Hangman," and more.
Windows to the Universe: Take a guided tour to learn more about volcanoes in the Solar System, life on Earth, and the physics of outer space.
The Why Files: Learn about news stories from a whole new angle. Find out not only what happened, but why --the ""Science
Behind the News!"
The Yuckiest Site on the Internet: Have you ever wondered why body odor develops or why people burp? This site will answer lots of your questions about why the human body acts as it does!