HEATKEYS

Encyclopaedia of music history, composers, theory, technology, tutorials, tools, science, programming, hardware, instruments, quotations, concerts, venues and news.

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

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

Free online puzzles and games on Thinks.com. Play Sudoku, daily word search, jigsaw and crossword puzzles, chess, checkers and many other games. Also find funny jokes, riddles and more on Thinks.com.

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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.

The Fractal Foundation uses the beauty of fractals to inspire interest in Science, Math and Art.

Virtual High School (VHS, Inc.) is the first large-scale project to create Internet-based courses at the pre-college level, providing a low-cost means of augmenting the range of courses a high school can offer without expanding enrollment.