If in a circle ABDC, circumscribe an equilateral triangle ABC; the straight line AD is equal to the sum of the two straight lines BD and DC: required a demonstration.

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This meeting will take place at the MAA Carriage House in Washington, DC on April 19, 2008.

A wooden log is encased in a wall. If we cut part of the wall away to a depth of 1 inch...

Considering non-unique representation of Maya calendar numbers may help your students understand their own number system better.

Find the height of a window.

This is the title page of the Nova Scientia (1537) of Niccolo Tartaglia (1499-1557). In this work, Tartaglia discussed the mathematics of artillery and developed methods for determining the range of a cannon.

Two posters illustrating the major milestones in the history of mathematics, from the first ideas of "number" to the proof of Fermat's Last Theorem.

Given four integers where if added together three at a time their sums are: 20, 22, 24, and 27. What are the integers?

NCTM Meeting in Philadelphia

What proportions of sugar at 8 cents, 10 cents and 14 cents per pound, will compose a mixture worth 12 cents per pound?