Top

Download a FREE Solution for your puzzles!

Napier's Bones
Click Image to Enlarge

Write Review Write your own review!

Napier's Bones

$48.99 CAD Canadian Flag

Your Credit Card company or PayPal will automatically convert* the Canadian Dollar amount into your local currency.

Currency Converter: * Exchange rates shown above are estimates only, and may vary slightly from the rates charged by PayPal or your Credit Card Company.

Product Information

ObjectDo complex multiplication using the number "rods".
DifficultyLevel 7 - Challenging
BrandCreative Crafthouse
TypesDave Janelle, Other Wood Puzzles
Dimensions19.3 cm x 19.3 cm x 1.9 cm / 7.6 in x 7.6 in x 0.75 in
PackagingShrinkwrap

Product Description

Napier's Bones was designed in 1617 by John Napier a Scottish Mathematician. In its day it was a wonderous device that simplified complex multiplication and other math processes such as long division and square roots. It was essentially the first calculator and was in common use for nearly 3 centuries.  
 
This is something I find wonderfully elegant in understanding and explaining how basic math works.  This can be a valuable tool for educators.    Plus every math geek should have one to better understand his/her roots:)) 

Napier's Bones comes with 2 full sets of rods to increase its versatility. The more rods you have, the more complex and varied numbers you can manipulate.  Also includes an attractive base and cover.

Made in the USA by Creative Crafthouse.

Customer Reviews |

Write your own review!

This item has yet to be rated