Magic of Flexagons: Paper Curiosities to Cut Out & Make (Paperback)
Flexagons are made by folding paper in certain ways and when they are flexed, turned and unfolded in different ways, they show puzzling and curious effects. Hidden inside a flexagon are a number of concealed faces and the challenge is to discover how to flex them into view smoothly and with confidence. Some of this extensive collection are in the form of puzzles to be solved, others have rather mysterious properties.
David Mitchell is an origami specialist, well known across the world for books and activities, including Tarquin's Mathematical Origami.