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Math symbols made easy

Beyond simple math and grouping (like "(x+2)(x-4)"), there are some functions you can use as well. Look below to see them all. They are mostly standard functions written as you might expect. You can also use "pi" and "e" as their respective constants.

Great collaborative project. Simple yet fun.

GeoGebraWiki is a free pool of teaching materials for the dynamic mathematics software GeoGebra. Everyone can contribute and upload materials! All contents of this pool may be used free of charge.

"The social repository of the world's greatest brain teasers, logical puzzles and mental challenges. Join us to add, rate, and comment on puzzles! "

An excellent overview of GeoGebra compass and straightedge construction

Conceived by Mathematica creator and scientist Stephen Wolfram as a way to bring computational exploration to the widest possible audience, the Wolfram Demonstrations Project is an open-code resource that uses dynamic computation to illuminate concepts in science, technology, mathematics, art, finance, and a remarkable range of other fields.\n\nIts daily-growing collection of interactive illustrations is created by Mathematica users from around the world, who participate by contributing innovative Demonstrations.

Evaluation of OLPC programs globally: a literature review

This looks very beautiful!