 Video Lectures in Mathematics  Jerry Farlow
An online pinboard gathering thousands of visual links to a broad range of math videos. Categories include applications of math; famous mathematicians; math education; math humor; math on TV, movies; STEM math initiatives; and "instructional: K12." Farlow
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 Virtual Optima  Tony Hürlimann, Chris Hürlimann
A company offering consultancy, software (a linear programming language for mathematical optimization and modeling), and sport league schedules. It also offers a book of optimization problems, with sample problems available online.
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 WebCab XL  WebCab Components
Range of math and finance techniques implemented within a free Excel addin for Windows. Techniques include: interpolation, probability and statistics, optimization, portfolio theory, options and futures pricing theory. Menu driven application development,
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 White Narcissus  Ivars Peterson (MathTrek)
The elegant, swooping forms carved out of wood by sculptor Robert Longhurst often resemble gracefully curved soap films that span twisted loops of wire dipped into soapy water. Alhough these abstract sculptures bear an uncanny resemblance to mathematical
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