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Cool Stuff: Amazing Abacus Math Video - PjLightHouse.com
This is one amazing Abacus Math Video.. must teach my son one day to use this.. gonna be very helpful for Maths 😛 more amazing maths clips.. Faster than a calculator | Arthur Benjamin | TEDxOxford Benjamin makes numbers dance. In his day job, he’s a professor of mathematics at Harvey Mudd College; in his …