TOYS, TRICKS, AND TEASERS
Gardner’s Mathemagic
Martin Gardner has had a long career writing about recreational mathematics, which includes games, puzzles, and magic tricks based on mathematical principles (see MAKE, Volume 12, page 80, “Mathemagician”). Gardner generously agreed to share with MAKE readers a few that can be described briefly and performed with no sleight-of-hand skills.
Photography by Donald E. Simanek
The Gilbreath Principle
A number of card tricks are based on a principle that magician Norman Gilbreath introduced to magic. It’s an application of combinatorial mathematics (which we will spare you here). ...
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