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After completing this assignment on Simon Stevin's treatment of decimal fractions in his 1585 De Thiende, the author's preservice mathematics teachers understood why our usual procedure for multiplying such fractions works.
A translation from the original Greek of a manuscript on magic squares by the Byzantine scholar Manuel Moschopoulos, written about 1315
The third part of a necklace of pearls, broken in a lover's quarrel, fell to the ground...
A cat sitting on a wall 4 cubits high saw a rat prowling 8 cubits from the foot of the wall;
A creative expression combining text, design and illustrations, originally designed for the International Congress of Mathematicians in Madrid.
A speculator bought stock at 25% below par and sold it at 20% above par. He gained $1560. How much did he invest?
Find a number having remainder 29 when divided by 30 and remainder 3 when divided by 4.
The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.
In the figure at the left, if the radii of each inscribed circle is 1, what are the dimensions of the bounding rectangle?
X, Y and Z hired a pasture for the season for $90.00. Each has a different number of mules and are on the pasture for a different number of days. How much is each to pay?

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