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One Penny, Two
Learning With Money Activity Kit
Swing Sets
This book uses childrens' natural ability to classify objects to introduce the concept of a set and membership in a set.Sets are fundamental to modern mathematics. Every principle …
The First Million Digits of Pi
Pi, the ratio of the circumference of a circle to its diameter, has been know to exist for thousands of years. Even before the common era, ancient mathematicians had found …
The First Million Digits of e
The number e, the base of the natural logarithm, has been know to exist for many years. The constant e was discovered by the Swiss mathematician Jacob Bernoulli while studying …
Swing Sets
What is Bigger Than Anything?
One Penny, Two
"It's a magic box. If you put a penny in the box and don't take any out, they will double each day," Joe told Jerry. "If the penny doubles each day," wonders Jerry, "how long will …
Geometric Nets Mega Project Book - Tabbed
Geometric nets provide many hours of fascinating fun Each net represents the surface of a unique geometric shape. Some of the shapes were described as much as 2500 years ago.A …
The Square Root of Two to One Million Digits
A conundrum faced ancient mathematicians. Which number to use for the square root of 2? Ancient Babylonians used the fraction 305470/216000. This was accurate to about six decimal …