Cool geometry lesson by @robertkaplinsky How far apart are the exits? http://t.co/7QixspySBM #maths #stem #mathchat
— Brian Marks (@Yummymath) July 15, 2014
via Twitter http://ift.tt/X7lQOo
July 15, 2014 at 12:56PM
Cool geometry lesson by @robertkaplinsky How far apart are the exits? http://t.co/7QixspySBM #maths #stem #mathchat
— Brian Marks (@Yummymath) July 15, 2014
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