- A Science Odyssey - Presents the people and the discoveries of 20th century science and technology in a variety of accessible, and interactive Web features. Based on the PBS television series.
- Activities and Quizzes on Science - Activities, games, and quizzes on a variety of science topics. Wonderful study aid for children aged 9-13.
- Adventures in Science and Technology - Introduces chemistry, physics, biology, engineering, and computer science. In English and French.
- Alaska Science Forum - Groups of articles on a wide array of topics, like volcanos, geology, living in the North, bugs, weather, and pets. Lots of weird facts.
- Ask Dr. Universe - All sorts of big and small questions are answered here, and include things that puzzle kids worldwide.
- Athena - Illustrated descriptions and activities on Earth Science and Space. Includes links to related materials and suggested learning activities.
- BBC Science & Nature - Useful information about humans, animals, space and the planet we live on. Includes quizzes, picture galleries, games, and news stories.
- Beakman's World - Answers to kids' science questions and fun science demonstrations for kids to do.
- Bill Nye the Science Guy - Check out the daily demo, watch a video clip or listen to an audio clips, and learn more about Bill Nye himself.
- CAGIS - Canadian Association for Girls In Science - Club for girls who get together with women scientists and do fun experiments. Site also has games and experiments to do at home.
- Careers in Life Science Information for Students - Links to sites offering information about various science careers, mostly in the life sciences, but also including astronomy.
- Cool Science - Energy-related science information for kids -- plus resources for teachers. Includes "Ask a Researcher" feature.
- Discovery Kids - Delivers informative articles, online games, a chat room, online science games, live web cams, showcase of video clips, and a station guide.
- Discovery School: A-to-Z Science - Offers homework help, articles, interactive activities, virtual tours, science fair ideas, and projects for kids.
- Explain that Stuff - Includes articles about science and technology, including space, computing, and nuclear power.
- Exploratorium Science Snacks - Miniature versions of some of the most popular exhibits at the Exploratorium.
- Funky Lab - Presents a mix of science information and activities, from toilets to steam engines. Includes quizzes, games, videos and articles on the science and the history of science.
- Girls Reaching Out With Science - Pairs middle school girls in Columbus, Ohio, with mentors at Capital University to study science.
- History Of The Universe - A short history of the universe, earth, life, explained in simple terms. Begins with the big bang theory and ends with the computer age.
- Hot Science Sites - A directory from the CSIRO Science club magazine covering a wide range of subjects.
- How a Galileo Thermometer Works - Illustrated tutorial explains the operation of the Galileo thermometer.
- How Stuff Works - Articles explain how hundreds of things work, from elements of the human body to space-age technology.
- How Stuff Works Express - Offers fun and informative articles about research and extraordinary people. Also includes information on hot sites, cool books, internet projects, and experiments. Includes teacher support materials.
- K-12 Science Jokes And Humor - Jokes organized by topic, including biology, earth science, chemistry, Einstein, math, and physics.
- Kid's Domain: Science Games - Features a large selection of animal, ecology, space, and dinosaur games.
- Kids and Science - E-community for discovering science in main themes around us. Includes projects and facts, as well as games and fun.
- Kids' Place: Science Library Adventures - Online science adventures for kindergarten and elementary school students.
- Kinetic City - A science radio show for kids, updated weekly. Keep up with the latest adventures of the Kinetic City Super Crew and do your own science experiments at home.
- Magi Early Eastern Philosophers (And a Great Poet) - Introduction to contributions by Al-Khwarismi, Al-Kindi, and Omar Khayyam in the fields of mathematics, astronomy, medicine, and optics. Period of time discussed is from around 680 AD to 1120 AD in the present day Middle East.
- Museum of Science and Technology - Offers online exhibits, games, research topics, and tips for kids.
- National Science Foundation: News - A multimedia gallery covering hundreds of current scientific discoveries and observations.
- Natural History Museum - Fun and games section that provides interactive scientific discovery experiments, such as building a volcano and taking a quiz about dinosaurs.
- NIH Office of Science Education - Life science education resources for students, teachers, and the general public.
- Oakland Museum of California - Museum specializes in the natural science, history and art of the Golden State. Contains current exhibitions, permanent galleries and projects.
- OLogy - Learn a lot about astronomy, paleontology, and the definitions of other "ologies" on this site by taking journeys through space and the Gobi Desert. Includes games and activities and is presented by the American Museum of Natural History.
- Ontario Science Centre: Science Zone - Dozens of interactive science activities focus on topics ranging from the human body to computer science.
- Paper Online - Educational resource includes history of paper, discusses what paper is and has instructions to make your own paper.
- Patent and Trademark Office Kids' Page - Learn about inventions, inventors, patents and trademarks through games, contests, calendar, and stories. For all ages.
- Patent Café - Discovery Café - Directory of kid-safe invention, science, discovery and innovation resources for K-12 kids, teachers and parents.
- Pfizer FunZone - Explore activities and articles about scientists while learning about many science topics.
- Playing With Time - Activities and movies that explore how things change over time. Also includes an overview of the museum exhibit at the Science Museum of Minnesota.
- Propane on the Brain - Experiments, games and safety tips for kids in grades K-8.
- Questacon - The National Science and Technology Centre in Australia presents free games, quizzes and activities to explain science to children and teenagers. Includes fun experiments to try at home, as well as movies and pictures about current exhibitions.
- Rat Lab - Encourages young people to get into science. With science articles, DIY experiments, profiles of real scientists and strange science facts.
- Renaissance Inventions and Technology - Discusses devices that are supposedly created in this period of time, such as clocks and the printing press.
- Schoolscience National Curriculum Science - Written for teachers and students of National Curriculum science in the UK. Covers some biology, chemistry, and physics topics. Well illustrated. Includes some quizzes.
- Science Experiments For Kids - Projects with a modest mess factor.
- Science for Families - Original articles, Internet science library, forum idea exchange, book and product profiles, projects, and experiments.
- Science Inside Out - News, information, quizzes and lecture notes from the Royal Institution, United Kingdom. Includes a list of events for schools.
- Science Made Simple - Kids get simple, detailed answers to common science questions. Plus great science projects and experiments, science news and interactive unit measurement conversions.
- Science News for Kids - Experiments to do, articles to read, science fair projects, puzzles, and games.
- Science World - Interactive world includes simple science fair projects, short biographies of inventors, an introduction to the planets, and a timeline that identifies important dates.
- ScienceInTheBox - About the science behind Procter and Gamble's laundry and cleaning products. Research and development, safety and sustainability issues.
- Scienceworks: Education Programs - Offers range of choices for student excursions with themes based around science and technology.
- ScienceZone - Provides information, quizzes and other activities related to the U.K. science curriculum for 8-11 year olds.
- Scientific Topics - Contains tutorials covering physics, chemistry, sea battles, minerals, china, airplanes and philosophy.
- Skytopia - World's Most Unanswered Science Project - Collection of science questions relating to physics, chemistry, sound, music, color and light.
- Soap Bubbles: Exploratorium - Explore the forces that mold bubbles, bubble recipes, books about bubbles and links to additional sites.
- Strange Matter - Explore the world of materials science. Investigate structure, properties, processing and performance to discover the secrets of everyday stuff.
- Terrific Scientific - Learn about the science of everyday life by following fun experiments and simple explanations. Submit your own ideas and experiments for inclusion.
- The Adventures of Echo the Bat - Follow Echo the Bat through the eyes of a satellite as he migrates through Arizona. Topics include false color satellite imagery, how scientist use these images to study habitats, and the electromagnetic spectrum. Interactive adventure game and activities for the classroom.
- The Black Hole Gang - Learn about the science adventures of Matt, Wei Ling, Rosa, A.J., and Newton. Designed as a resource for kid-friendly science on the web.
- The Bubblesphere - All about soap bubbles. Bubble blowing, solutions, history, fun, Java games, bubble machines and trivia.
- The Christopher Columbus Awards - Competition open to students in grades 6, 7 and 8. Three or four students work as a team to identify a problem in their community, research it, and use science to develop an innovative solution.
- The Exploratorium - A hands-on museum of science, art, and human perception in San Francisco. Site provides interactive online exhibits and exhibitions, activities, science news, and publications, general information about the museum.
- The Field Museum - Maintains exhibits and conducts research for old and new biological specimens, ancient cultural artifacts and geology. Page includes photos of exhibits, interactive map of expeditions, educational programs, and history of the facility. Located in Chicago, IL, USA.
- The Field Museum's Women in Science - Contains thirteen interviews with women in different areas of science.
- The Flying Turtle - Illustrated site celebrates and explains the basic scientific principles that govern both nature and human technology.
- The Paper Project - Learn about the simple process of making paper using plants or natural cloth. Page includes illustrations to show the method.
- The Why Files - Explores the science behind the news such as why planes crash, how new diseases break out, and why athletes shouldn't use drugs.
- The World of Agnes Pflumm - Official site for the Agnes Pflumm science education novels. Includes lesson plans, science project help, integrating science and art, links science and literature, and book information. Also includes tips for kids about time management.
- The Yuckiest Site on the Internet - Educational science entertainment about yucky things such as worms. Club Yucky, games, and recipes.
- Thursday's Classroom - News, research, lesson plans and educational activities from NASA.
- TryScience.org - Features virtual field trips, virtual experiments and other interactive activities supplied by science centers around the world.
- Who Wants to Win a Million Dollars? - The Science Game - Test your knowledge of math and science as you work your way to the million dollar level. Although the questions are real, the money, unfortunately, is not.
- Wonderville - Zoom around this 3D city playing games and learning about science.
- X-Ray for Kids - Information geared to children about x-rays and interesting x-rays of plants, shells, animals.