Maya Mathematics
An easy to use ancient math system by the maya from the yucatan in mexico. acquire the maya calculation assistant poster, a maya calculator matrix
http://mayacalendar.com/f-mayamath.html
Maya Mathematics 2
Maya Mathematics 2
http://www.michielb.nl/maya/math.html
Maya Mathematics 5
An easy to use ancient math system by the maya from the yucatan in mexico. acquire the maya calculation assistant poster, a maya calculator matrix
http://www.mayacalendar.com/mayacalendar/f-mayamath.html