All You Need Is Paper All The Puzzles Inside Are Made Out Of Paper From Simple Teasers To Extreme Brain Workouts original Designs Co-developed By A Mathematician, An Origami Artist And A Mechanical Puzzle Maker, This Inventive Book Provides A Unique And Invaluable Collection Of A Large, Comprehensive And Diverse Variety Of Paper Puzzles. And They Only Require A Sheet Of Paper And Perhaps A Pair Of Scissors easy To Challenging There Are 99 Unique Puzzles Including Paper Strip Puzzles, Mbius Strips And Flexagons, Two-dimensional Sheet Folding, &39;fold-and-cut&39; Puzzles, 3d Dissections And Constructions, Sequence Folding Puzzles, Origami Puzzles And Even Paper Toys And Magic.provides Hours Of Fun Anyone Of Any Age Can Find Hours Of Enjoyment And Challenge learning Geometry, Mathematics And Problem-solving Challenges Can Be Fun