A square walled city of unknown dimensions has four gates, one at the center of each side.

Individual problems from throughout mathematics history, as well as articles that include problem sets for students.

A square walled city of unknown dimensions has four gates, one at the center of each side.

What it took to get an 8th grade education in 1895

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?

The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.

There are two piles, one containing 9 gold coins, the other 11 silver coins.

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

You have two sums of money, the difference of which is 2 dirhams; you divide the smaller sum by the larger and the quotient is equal to 1/2. What are the two sums of money?

How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students

There is a mound of earth in the shape of a frustum of a cone.

An old Chinese general led his army to a river with a steep bank. Standing atop the bank, he held a stick 6 feet long perpendicular to himself.