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Convergence articles

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Three images from Kepler's 1609 Astronomia Nova, the text in which he introduced his first two laws of planetary motion

How many calves, goats and pigs did the farmer buy?

Determine the greatest cylinder that can be inscribed in a given cone.

The history of the four color problem with sketches of the attempted proofs in the nineteenth century and an outline of the computer proof of the twentieth century.

A study of Mullikan's Nautilus, using movies to illustrate the important ideas

I wish to find three numbers of such nature that the first and the second with 1/2 of the third makes 20...

A bridge is built across a river in 6 months by 45 men. It is washed away by the current. Find the number of workmen sufficient to build another of twice as much worth in 4 months.

The author compares Greek ladder, continued fraction, and Newton's Method approximations, noting that the Greek ladder easily gives both of Archimedes' famous bounds.

A survey of techniques of minimizing and maximizing over the centuries.

A discussion of a collaborative effort in Italy to produce materials enabling secondary school teachers to use the history of mathematics in the classroom.