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HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

The Physics Classroom is an online interactive tutorial of basic physics concepts. The lessons use an easy-to-understand language to present common physics principles discussed in a first-year high school physics course.

School for Champions provides free online explanations and lessons for those seeking personal, academic and professional success

Learn how to do just about everything at eHow. Expert Village is now a part of eHow, adding expert How To videos to eHow, the world

Infoplease.com, a free, authoritative, and respected reference for Internet users, provides a comprehensive encyclopedia, almanac, atlas, dictionary, and thesaurus. Infoplease.com contains facts on all subjects including sports, entertainment, techno...

Windworld.com and Experimental Musical Instruments (EMI) is an organization devoted to interesting and unusual musical instruments and sound sources of all sorts

Phys.Org internet news portal provides the latest news on science including: Physics, Space Science, Earth Science, Health and Medicine

Physics and Physical Science Teacher Supplies - The Cool Stuff your students love!

Yahoo! Answers is a new way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

ThinkQuest is an international competition where student teams engage in collaborative, project-based learning to create educational websites. The winning entries form the ThinkQuest online library.