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Weisstein, E. (n.d.). Pythagorean theorem from mathworld--a wolfram. Retrieved from http://mathworld.wolfram.com/PythagoreanTheorem.html.

Babylonian mathematics cuneiform digital library initiative. (2008, August 14). Retrieved from http://cdli.ucla.edu /wiki/doku.php/babylonian_mathematics.

Baur, G, & Pigford, D. (1984). A Survival guide for the junior high/ middle school mathematics teacher. West Nyack, NY: Parker Publishing Company, Inc.

Berrone, L. (2009). The associativity of the pythagorean law.

*American Mathematical Monthly*, 116(10), 936-939.Bogomolny, Alan. (2010). Pythagorean theorem and its many proofs from interactive mathematics miscellany and puzzles. Retrieved from http://www.cut-the-knot.org/pythagoras.

Box proof. [Image]. Retrieved July 22, 2010, from: URL.

Cartoon pythagoras. [Image]. Retrieved July 20, 2010, from: http://chci.wrdsb.on.ca/library/tokmath_files/Math2.jpg.

Graphic Pythagoras. [Image]. Retrieved July 23, 2010, from: http://blogs.colette.fr/joshcheuse/files/2009/05/pythagoras.jpg.

GR1o6180339887498948. (Producer). (2009). Pythagorean theorem proof. [Web video]. Retrieved from http://www.youtube.com/watch?v=kBw_i6tlQfU.

Leyendekkers, J. V., & Shannon, A. G. (2006). Why 3 and 5 are always factors of primitive pythagorean triples.

*International Journal of Mathematical Education in Science & Technology*, 42(1), 102-105.Lockhart, P. (2009).

*A mathematician’s lament: how school cheats us out of our most imaginative art form.*New York, New York: Bellevue Literay Press.Lyre. (2010). Retrieved from http://lyre.info/.

Maor, E. (2007). The pythagorean theorem 4,000 years of history. Princeton, NJ: Princeton University Press.

McClain, E. (1994). The world and I music theory. Retrieved from http://www.new-universe.com/pythagoras/mcclain.html.

Morey, J. (1996). An interactive proof of pythagoras’ theorem. Retrieved from http://www.sunsite.ubc.ca/LivingMathematics/V001N01/UBCExamples/Pythagoras/pythagoras.html.

O'Connor, J, & Robertson, E. (1999, January). Pythagoras biography. Retrieved from http://www-history.mcs.st-and.ac.uk/Biographies/Pythagoras.html.

pitho100. (Producer). (2006). Water-proof of pythagoras' theorem. [Web video]. Retrieved from http://www.youtube.com/watch?v=hbhh-9edn3c&feature=related.

Pythagoras. (2010, June). Retrieved from http://www.thebigview.com/greeks/pythagoras.html.

Pythagoras of samos a collection of essays and lessons for junior and senior high school. (2010). Retrieved from http://www.mathgym.com.au/history/pythagoras/pyth.htm.

Pythagorea of the mouth. [Image]. Retrieved July 25, 2010, from: http://www.bearskinrug.co.uk/_articles/2006/05/23/pythagorea/.

Pythagorean proof. [Image]. Retrieved July 20, 2010, from: URL.

Pythagorean theorem. [Image]. Retrieved July 22, 2010, from: http://static.wix.com/media/ba9499fdfff915873efdc46235fea933.wix_mp.

Samos map. (2010). Retrieved from http://www.diavlos.gr/maps/samosmaps.html.

Thales. (2010, June). Retrieved from http://www.thebigview.com/greeks/thales.html.

Valens, E. (1964). The number of things: pythagoras, geometry and humming strings. Vancouver, Canada: Clarke, Irwin & Company Limited.

Weisstein, E. (n.d.). Pythagorean theorem from mathworld--a wolfram. Retrieved from http://mathworld.wolfram.com/PythagoreanTheorem.html.

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