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Convergence articles

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One of the logarithm inventor's less well-known computational aids

Ibn al-Bannāʾ used a shortcut for mental multiplication to justify solutions to quadratic equations.

Square roots via manipulatives and a method from ancient China

Almanac and mathematical problem-and-solution source in Hanoverian England

Introduce an ancient method in your linear algebra class.

100+ years of discovery and rediscovery, plus 'how-to's, to pique your students' interest

Construct geometric figures following 'rules of the cord' for altar construction.