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Images of the first printed edition of Euclid's Elements

Three vertical posts along a straight canal, each rising to the same height above the surface of the water. By looking at the line of vision, determine, to the nearest mile, the radius of the earth.

A discussion of why we use "e" to represent the base of the natural logarithm system.

Given four integers where if added together three at a time their sums are: 20, 22, 24, and 27. What are the integers?
There were two men, of whom the first had 3 small loaves of bread and the other, 2.
A square circumscribed about a given circle is double in area to a square inscribed in the same circle. True of false? Prove your answer.
There are many historical sessions during the 2007 summer meeting of the Mathematical Association of America.
Three hundred pigs are to be prepared for a feast.
Prove that if the sums of the square opposite sides of any quadrilateral are equal, its diagonals interect at right angles.

Here are all articles, classroom activities, and reviews arranged into annual volumes starting with 2004.

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