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Convergence articles

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A method for extracting square roots used in Italy through the 18th century was introduced in a manuscript by the 12th century mathematician al-Hassar. Appendix: When Was Fermat Born? (Not in 1601 ...)

A lion, a wolf and a fox each take a certain amount of time to eat a goat separately. How long would it take all these animals together to eat the goat?

In the figure at the left, if the radii of each inscribed circle is 1, what are the dimensions of the bounding rectangle?

A certain man says that he can weigh any amount from 1 to 40 pounds using only 4 weights. What size must they be?

Curve sketching, tangent lines, and optimization, explored via interactive applets

A two door gate of unknown width is opened so that a 2 ts'un gap exists between the two doors.

Now a good horse and an inferior horse set out from Chang'an to Qi. Qi is 3000 li from Chang'an.

Review of Bertram's text on the history of Greek science.

Three persons bought a sugar loaf in the form of a perfect cone 25 inches high and agreed to divide it...what was the slant height of each one's share?

The Tree of Proportions and Proportionality from the De Divina Proportione of Luca Pacioli published in 1509.