I knew that Wolfram Alpha was coming, but couldn’t quite figure out what it was so I didn’t keep too close an eye out for it. Then I read on Teaching College Mathematics and ...

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

Coolmath has a ton of cool math games and puzzles, lots of really clear math lessons (arithmetic, fractions, decimals, algebra, etc.), fractals, geometry, tessellations and more. Tons of very cool math stuff for kids, teens, parents and teachers too!

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia encyclopedia, Wikipedia encyclopedia, Hutchinson encyclopedia, examples from classic literature, pronunciations, word browser, glossary. Free access

Go Geometry is an educational website that offers a variety of resources for teaching and learning about geometry. The website mixes dynamic geometry, animations, science, and Incan history in order to raise students' interest in Euclidean geometry. On line Math tutoring. Also Cuzco, Lost City of the Incas, Machu Picchu, Inca Trail, Incan Quipu, Nazca Lines, Lord of Sipan, Peru. Travel.