Napier Rod Simulation

John Napier invented a way to do multiplication using a set of rods (or bones as he called them.) It was similar to the lattice method of mulitiplying. See http://www.cee.hw.ac.uk/%7Egreg/calculators/napier/about.html to find out more about them.

You will learn how to use them by watching and explaining a simulation of how you can multiply 273 x 5 with them.

See

http://www.cee.hw.ac.uk/%7Egreg/calculators/napier/simulation.html

Explain how 273 x 5 was calculated using the bones.

 

 

 

How is this similar to lattice multiplication? See for help.