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Convergence articles

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Suppose that the propability of success in an experiment is 1/10. How many trials of the experiment are necessary to insure even odds on it happening at least once?
What is the perpendicular height of a cloud when it's angles of elevation were 35 degrees and 64 degrees as taken by two observers?

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.

Determine the radii of three equal circles decribed within and tangent to a given circle, and also tangent to each other
A new collection of original source materials in the mathematics of five civilizations.
A seminar of faculty from colleges and universities in the Philadelphia area, meeting monthly at Villanova University.
Posters illustrating mathematics concepts in such places as China, Japan, India, and the Americas.
Wanting to know the breadth of a river, I measured a base of 500 yards in a straight line close by one side of it.
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.

The author uses her poem, 'The Enigmatic Number e,' to show how poetry about the history of mathematics can be used to enrich and enliven mathematics instruction.