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Volume 7, Number 51

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23 December 2002                                 Vol. 7, No. 51


              Chisenbop Tutorial | QRhetoric Calculus
                     Snow Crystals | Crystals

                 CHISENBOP TUTORIAL - Andy Harris

   Andy Harris, a computer science instructor for Indiana
   University/Purdue University - Indianapolis (IUPUI),
   originally wrote the Chisenbop tutorial to compare this
   finger arithmetic method with the way computers do

   His Streaming Media Lessons, which require the free Real
   Media player, begin here:

     - Counting

     - Adding and Subtracting

     - Multiplication

     - Division

   Harris' original page without digital images or Javascript
   is also still available:


                 QRHETORIC CALCULUS - Bruce R.


   A site designed by a recent graduate who majored in
   mathematics at Brooklyn College of CUNY. Each page consists
   of a study sheet, problem sets, and answers on the following

     - Mathematics Intro
     - Taking Limits
     - Derivatives
     - The Complex Derivatives
     - Trig in Derivatives
     - Advanced Differentiation
     - Using Critical Points
     - Related Rates
     - Optimization Problems
     - Antiderivatives

   There is also a handy reference page:


             SNOW CRYSTALS - Kenneth G. Libbrecht

   This site is all about snow crystals and snowflakes, and how
   these remarkably complex and beautiful structures appear,
   quite literally, out of thin air. The many facets of snow
   crystals are described in these sections:

     - Natural Snowflakes
     - Designer Snowflakes
     - Snow Crystal FAQs


                  CRYSTALS - S. Alejandre

   Students studying polyhedra enjoy seeing the structures as
   they occur in the real world.

     - Crystallography
     - Systems of Crystals
     - Paper Nets


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