HEATKEYS

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.

Online store and gallery of mathematical art. Browse topics including tessellations, polyhedra, fractals, anamorphic art, kaleidoscopes, M. C. Escher, Origami, quilting, and architecture. Books, puzzles, posters and more for each category.

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WikiAnswers: Questions and Answers from the Community

Index to George W. Hart

The Math Forum is the comprehensive resource for math education on the Internet. Some features include a K-12 math expert help service, an extensive database of math sites, online resources for teaching and learning math, plus much more.

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Shapeways is your personal fabrication service, using 3D printing. Personalized products for YOU and BY you.

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NWN2Wiki is a community site that anyone can contribute to. Discover, share and add your knowledge!

Final answers. Numeracy and numerical culture. Mathematics and physics. Physical measurements and Units. Weights and measures. Historical metrology.