• Archimedes' Lab puzzles
  
  Archimedes' Puzzles and Optical Illusions
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• High School Math
  
  High School Ace is the trusted web portal to the best free educational resources for high school students. It features academic subject guides, reference tools, and college information.
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• Ivars Peterson's MathTrek
  The Cow in the Classroom
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• KaBoL
  with kabol mathematics science
• Link to all sorts of Mathematics on the Internet
  
  Dozens of Internet Links make Math Fun and Exciting.
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• Math Forum
  Ask Dr. Math - High School Archive
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• Mathematical Art of M.C. Escher
  Platonic Realms MiniText
  Article on the mathematical art of M.C. Escher, with emphasis on inspiring the student to see mathematics with fresh eyes.
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• MathWorld
  
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• Platonic Realms Home Page
  
  Mathematics resources for students and instructors.
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• PUZZLES. Can you believe it?
  
  For active minds and brain-teaser enthusiasts: play, create or solve intriguing puzzles; tackle tricky math problems; discover new optical illusions.
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