0 Mathematics acitivity / Maths Lab September 18, 2014 by Tuba Khan · Published September 18, 2014 · Last modified November 11, 2014 Napier’s Bones Material Required: Cardboard or chart paper. John Napier (1550-1617), the man who invented the logarithmic tables also made this simple calculation device. Napier’s bones can be used for multiplying a large number with a...