When teaching Quadratic equation in Algebra class using the conventional math pedagogy, this is what you get …
Teaching Math without word, especially for autistic and dyslexic kids, using pictures, video games… look how easy is to explain difficult concepts – even for adults – why (-2)x (-3) = + 6 ?
http://www.transum.org/software/SW/YouTube/Video.asp?Movie=7odhYT8yzUM
Mathtuition88 
Your style is really unique in comparison to other folks I have read stuff from.
Thanks for posting when you have the opportunity, Guess I’ll just
book mark this page.
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