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The annual meeting of the NCTM always contains sessions dealing with the history of mathematics and its use in teaching.
A letter to Sam Greitzer, late editor of Arbelos, discussing the derivation of two formulas for calculating pi.

Our reviewer praises the selection of excerpts, the use of facsimiles rather than transcriptions, and the commentary and English translation in this collection.

Two circles, the sum of whose radii is a, are placed in the same plane with their centers at a distance 2a...
A great book from which to learn and teach the subject of relativity.
The Arithmetic of Boethius (480-524) dates from the early sixth century. This page is from a mansucript (Plimpton MS 165) that dates from approximately 1294, written on vellum.
Assume that the human population after the flood was 6 and that 200 years later the population was 1,000,000. Find the annual growth of the population.
A man and his wife drink a barrel of wine at different rates. Find the rate it takes both of them together to drink the wine.
In Archimedes' Book of Lemmas (ca 250), he introduces a figure that, due to its shape, has historically been known as "the shoemaker's knife" or arbelos.
What is the sum of the reciprocals of the triangular numbers?

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