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Ask Numbers

Online measurement conversions for metric, imperial and US customary systems. Includes many conversion calculator categories, thousands of units, definitions and formulas.

Biographies of Women Mathematicians

Biographical essays or comments on women mathematicians profiled.

Cool Math

Free online math lessons and games.

Create a Graph

Here you will find 5 different graphs and charts for you to consider; bar, line, XY, area, and pie.

Fun Mathematics

Use as a tool for learning elementary arithmetic operatons.

Math Cats

Fun math for kids. Creative, open-ended math explorations.

Math World

A free service to the world's mathematics and internet communities as part of a commitment to education and educational outreach by Wolfram research, makers of Mathematica.


Includes information about all aspects of tesselations; their history, lessons, and galleries of examples.