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British-Israeli recreational mathematician, communicator and educator, Yossi Elran explores in-depth six of the most ingenious math puzzles, exposi...

The hexaflexagon is a folded paper strip of colored triangles that has long delighted people with how it “magically” changes its appearance when “f...

The hexaflexagon is a folded paper strip of colored triangles that has long delighted people with how it “magically” changes its appearance when “f...

British-Israeli recreational mathematician, communicator and educator, Yossi Elran explores in-depth six of the most ingenious math puzzles, exposi...

'This is a marvellous book. The diversity of possible puzzles that can be given with these very limited resources, which are basically some paper a...