This puzzle is versatile and interesting with appeal for all ages. Comes in a variety of sizes. Develops the spatial part of the brain in a very entertaining way. The 7 pieces will make a cube 240 different ways and they will also make many other shapes, with each shape requiring all the pieces.
Comes with instruction sheets, including 60 3D shapes that can be made (with solutions), along with recommended websites that are dedicated to this puzzle that will give you many more shapes, plus math theory, history and more. Invented by Danish mathematician Piet Hein in 1936.
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