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Convergence articles

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Prove that if the sums of the squares of opposite sides of any quadrilateral are equal, its diagonals intersect at right angles.

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

This 1989 revision of the 1969 NCTM yearbook still provides wonderful suggestions for using the history of mathematics in the classroom.
A study of Mullikan's Nautilus, using movies to illustrate the important ideas

Three hundred pigs are to be prepared for a feast.

The dimensions of a rectangular box in inches are expressed by three consecutive numbers. The surface of the box is 292 square inches. Find the dimensions.

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

Essays on various aspects of mathematical thought by prominent mathematicians of the past century.

A discussion of a collaborative effort in Italy to produce materials enabling secondary school teachers to use the history of mathematics in the classroom.
Whimsical posters of fifteen mathematicians with brief biographies.

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