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  E-mail Message: I thought you might be interested in this item at http://www.worldcat.org/oclc/15162396 Title: Turtle geometry : the computer as a medium for exploring mathematics Author: Harold Abelson; Andrea A DiSessa Publisher: Cambridge, Mass. : MIT Press, 1986, ©1980. ISBN/ISSN: 0262510375 9780262510370 OCLC:15162396

  
  

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Subjects

• Geometry -- Computer-assisted instruction.
• Computer-assisted instruction.

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Turtle geometry : the computer as a medium for exploring mathematics