I am a semi-retired maths teacher living in the UK. I have taught for over forty years, 20+ years in England and 17 years in the Far East. I have a good honours degree in mathematical sciences, a post-graduate certificate in education and qualified teacher status.
How many Pythagorean Triples (or Triads) exist? Ever wondered? This spreadsheet investigation helps you find out.
First we look for a pattern, then see if we can derive the general case. Using MS Excel we can Investigate with data values, and see if any conclusions can be drawn.
Instruction sheet and MS Excel (2007 and upwards) are supplied
Creative Commons "Sharealike"
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