Exploring a Puzzling Grid
This blog looks at the idea of folding a grid of squares along the dividing lines in any fashion, and how this idea was explored by Henry Dudeny and Martin Gardner. It explains how this idea can be used to create a handful of magic tricks.
Mathematician. John J. & Ann Curley Chair in Liberal Arts at Dickinson College. Author of Tales of Impossibility and Euler's Gem. Coffee drinker.