A hexaflexagon (also called a kaleidocycle) is a folded geometric figure that can be “flexed” to expose many sides. This craft is a 3-D hexaflexagon, made of six tetrahedrons. To make a 3-D hexaflexagon, print out the template, cut and fold carefully, then tape (or glue) into shape. You can then “flex” the 3-D hexaflexagon, exposing each of four six-sided faces, one at a time.
The hexaflexagon was invented in 1939 by Princeton University graduate student Arthur H. Stone (from England). He had trimmed his American notebook paper to fit in his English notebook. He folded the trimmed-off strips and devised the first hexaflexagon, a flat one that had three faces (this is now called a trihexaflexagon).
- Paper (cardstock or construction paper works well)
- Tape or glue
Now you can carefully “flex” the hexaflexagon, exposing the four sides, one at a time. (Before you flex it, make sure all the folds are straight and all the corners are pointy.)