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Convergence articles

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NCTM Meeting in Philadelphia
A study of Mullikan's Nautilus, using movies to illustrate the important ideas
Three hundred pigs are to be prepared for a feast.
A brief introduction to the life of John Napier, along with an animation of calculations using Napier's bones.
This a wonderfully written tour of aspects of classical geometry-- a must read for all geometry teachers.
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 delightful survey of the history of trigonometry, along with discussions of its uses, both ancient and modern.
Brief biographies of mathematicians with mathematical activities based on their work.
In the figure at the left, if the radii of each inscribed circle is 1, what are the dimensions of the bounding rectangle?
The history of the Poincare conjecture up to its recent proof by Grigori Perelman.