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An image of the calendar, together with instructions for its use
Given a number, take 1/3 of the number away from itself and add 2. If this result is multiplied by itself, it equals the number plus 24. What is the number?
This is the title page to the 1811 edition of the Descriptive Geometry of Gaspard Monge (1746-1818). This book deals with methods for representing three-dimensional objects in two dimensions. It was written to accompany Monge's courses at the Ecole Polytechnique in Paris.
A book delving into the working of the mathematical mind.
The annual meeting of the NCTM always contains sessions dealing with the history of mathematics and its use in teaching.
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;
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?

Convergence Advisory Board 2004-2009

A comprehensive history of trigonometry from ancient times to the Renaissance.