The MegaPenny Project | Index Page
Visualize huge collections of pennies (from one to billions and billions) accompanied by data on the size of the pile, weight, and area (if laid flat).
http://www.kokogiak.com/megapenny/default.asp
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NumberSpiral.com - Home
This site is devoted to the number spiral, a type of graph that reveals the distribution of primes and other properties of integers.
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The Wolfram Demonstrations Project
An expanding collection of freely available, interactive Demonstrations in math, science, and many other areas--at all levels from elementary education to front-line ...
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MathWorld: The Web's Most Extensive Mathematics Resource
Comprehensive and interactive encyclopedia of mathematical equations, terms, derivations, and more, for students, educators, math enthusiasts, and researchers.
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What's Special About This Number?
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Folding Paper in Half Twelve Times
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Number Gossip
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BBC - Radio 4 - 5 Numbers - Index
5 Numbers is a quirky look at five of the most important numbers in mathematics ... At its simplest, Pi is the ratio of the circumference of a circle to its diameter. ...
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Cool math .com - An amusement park of math and more! Math lessons, math games, math practice, math fun!
Tons of very cool math stuff for kids, teens, parents and teachers ... Coolmath.com - An amusement park of math and more... designed for fun! Bored with math? ...
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Cool math 4 kids - math games, math puzzles, math lessons - designed for kids and fun!
Math games, fun math lessons, puzzles and brain benders, flash cards for addition, ... Thanks for visiting Coolmath4kids.com © 1997-2009 Coolmath.com, Inc. ...
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The Wolfram Functions Site
Encyclopedic collection of information about mathematical functions serving as a resource for the educational, mathematical, and scientific communities.
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