A biography of the geometer Donald Coxeter.

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A biography of the geometer Donald Coxeter.

If an arc of 45 degrees on one circumference is equal to an arc of 60 degrees on another circle, what is the ratio of the areas of the circle?

A ladder is placed perpendicular to the plane of the horizon, and in coincidence with the plane of an upright wall.

A man entered an orchard through 7 gates, and there took a certain number of apples. When he left the orchard, he gave the first guard half the apples he had and 1 apple more.

A teacher agreed to teach 9 months for $562.50 and his board. At the end of the term, on account of two months absence caused by sickness, he received only $409.50. What was his board worth per month?

After completing this assignment on Simon Stevin's treatment of decimal fractions in his 1585 De Thiende, the author's preservice mathematics teachers understood why our usual procedure for multiplying such fractions works.

The Ohio Section Short Course will consider the use of original sources in teaching mathematics.

A wooden beam is stood vertically against a wall. The length of the beam is 30 units.

Given a door and a measuring rod of unknown dimensions, the rod is used to measure the door.

Now there are 100 deers [being distributed] in a city. If one household has one deer there is a remainder...Find the number of households in the city.