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.

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Determine by using algebra the number of degrees in the angle A where: cos A = tan A

A survey of the famous Konigsberg Bridge Problem and its connection to graph theory, by an undergraduate student

Leonardo da Vinci and Albrecht Durer both offered approximate constructions of regular pentagons for the use of artists. This article explains these constructions.

Find the height of a window.

Archimedes' use of the law of the lever to compute areas and volumes in The Method is discussed. Classroom ready examples are presented.

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.

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

A listing of the history sessions at the 2008 Joint Mathematics meetings in San Diego, January 4-9, 2008.

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