The Secret World of Flexagons – Book co-written by Murray Hill Association Member

The Secret World of Flexagons delves into the mathematical underpinnings of
flexagons as never before, even as it also explains and absorbs previous
flexagon theories. It shows dozens of ways they can be flexed, the huge variety
of different flexagons that can exist, their connections to various branches of
mathematics, and some of the many ways they can be sheer fun. There has
never been a flexagon book this comprehensive and original.

The hexaflexagon is a folded paper strip of colored triangles that has long delighted people
with how it “magically” changes its appearance when “flexed”. This hands-on,
comprehensive book goes beyond the hexaflexagon, the standard version of this folded
puzzle, exponentially expanding the barely explored field of flexagons as it brings new
options and fresh insights to light.
● Learn over a dozen different flexes, and make dozens of different flexagons with the aid
of step-by-step illustrated directions and templates to copy and print.
● Delve into the internal structure of flexagons and discover a universal way to describe
and predict their behavior.
● Learn how to create your own custom flexagons with a special computer program.
● Understand how flexagons are connected to group theory, computer science, and
topology.
● Have fun decorating flexagons and make flexagon books, puzzles, pop-ups, mazes, and
more.
Written in a clear, easy-to-understand, and conversational style and enhanced with
challenges and tips to broaden your flexagon skills and spark creativity, The Secret World of
Flexagons: Fascinating Folded Paper Puzzles is a must for flexagon enthusiasts, teachers,
students, libraries, mathematicians, and everyone who loves to solve a good puzzle.