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Teen Math Whizzes Go Euclid One Better
[ Mature Teens ] - Features a discussion about the works of two teenagers, David Goldenheim and Daniel Litchfieldm, from Connecticut. They helped find a solution that eluded Euclid in finding a method to partition a line into any number of equal sections. http://jwilson.coe.uga.edu/Texts.Folder/GLaD/GLaD.Comments.html
[ Teens/Mature Teens ] - Have fun learning through activities about polygons, triangles, circles, and the volume of cylinders. Page includes an historic timeline, SAT type quiz, and glossary of terms.
[ Teens/Mature Teens ] - A program for computing lines, surfaces and volumes of the main plane and solid figures, through direct and indirect formulas. Includes multiple languages.