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Convergence articles

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Relationships between Architecture and Mathematics
NCTM Annual Meeting in St. Louis
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.
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?
An oblong garden is a half yard longer than it is wide and consists entirely of a gravel walk...
In this article which won the 2005 prize of HOMSIGMAA, the author discusses Eratosthenes' argument to determine the size of the earth as well as possibilities for the size which Eratosthenes found (in modern measures).

Convergence Advisory Board 2004-2009

Show that the curves x2 - y2 = a2 and 2 xy = b2 cross at right angles.
A man went to a draper and bought a length of cloth 35 braccia long to make a suit of clothes.
The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.