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Convergence articles

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The highest point of the Andes is about 4 miles above sea level.
I have two fields of grain. From the first field I harvest 2/3 a bushel of grain/unit area; from the second, 1/2 bushel/unit area.
A collection of short pieces detailing how Euler solved a particular mathematics problem.
Suppose a man had put out one cent at compound interest in 1620, what would have been the amount in 1824, allowing it to double once in 12 years?
Tartaglia's method for solving cubics, which he eventually explained to Cardano.

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.

Three men have a pile of money, their shares being 1/2, 1/3 and 1/6. Each man takes some money from the pile until nothing is left.
Two persons sat down to play for a certain sum of money; and agree that the first who gets three games shall be the winner. After a few games they resolve to divide the stakes. How much should each person receive?
Given two circles tangent to each other and to a common line, determine a relationship between the radii and the distance between the tangent points.
Four episodes in the history of geometry are discussed, where dynamic geometry helps in understanding the ideas.

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