Mark Willis
@markywillis63
Teacher of Mathematics for 40 years. Taught in Peru 🇵🇪 , Thailand 🇹🇭 and UK🇬🇧 . Have a Maths YouTube channel and avid user of GeoGebra and Quizlet.
ID: 311438975
https://sites.google.com/view/mathematics-videos-geogebra/home 05-06-2011 13:11:07
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