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Convergence articles

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The author became fascinated with the mysterious role of √-1 in electronics. Turning to history for insight, he brings the perspectives of both a practical man and a scholar in conveying the enchantment of mathematics for a non-mathematician.
This is an invited working conference as part of the ICMI Study Series.
A certain gentleman ordered that 90 measures of grain were to be transported from his house to another, 30 leucas distant.
There are two columns in the ruins of Persepolis left standing upright; one is 70 ft. above the plane, and the other 50 ft;
A wonderful survey of the history of mathematics, emphasizing its relationship with the ambient culture.
A listing of the history sessions at the 2008 Joint Mathematics meetings in San Diego, January 4-9, 2008.

The author shows how teachers can use Leonhard Euler's original works in the classroom to explore Euler's famous polyhedral formula,
V + F = E + 2.

A compilation of ethnomathematical ideas from around the world.
Boyer's classic text, as revised by Uta Merzbach, is still worth having.
If a ball 6 inches in diameter weighs 32 lbs, what will be the weight of a ball 3 inches in diameter?