Product is well made, easy to customize once you receive. Codes are endless.
The instruction sheet ...
Enigma 37 Encryption Machine with letters & numbers
Date Added: 03/03/2017 by Kevin Paulsen
The Fractions Puzzle – Math Teaching Aid - includes cover
Hi Dave, Is it possible to make a decimal version ,i.e. 1/10 would show as 0.10, 1/8 would show as 0...
Date Added: 02/18/2017 by Ken Crompton
Napiers local Arithmetic Board
A beautiful implementation of a mathematical concept and a godsend to those of us who love Napier's ...
Date Added: 01/27/2017 by Richard Blake
Ramube Octahedron - An challenging CreativeCrafthouse design
My son-in-law solved it in 5 minutes. I was disappointed because it said it was hard.
Date Added: 12/26/2016 by Bridget Pooley
Five Fit Puzzle - a Stewart Coffin design
This is a great little puzzle, but be careful if you let younger people attempt to solve it (i.e. hi...
Date Added: 12/04/2016 by aaron Chatagnier
Calibron 12 - very difficult design from 1933 - Now with Cover
I purchased this as gifts for Christmas 2015. I bought 1 for myself. No one has solved this puzzle a...
Date Added: 05/19/2016 by Paula Clark
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