Further Adventures of Penrose the Mathematical Cat by Theoni Pappas

Author:Theoni Pappas
Language: eng
Format: epub
Publisher: Wide World Publishing
Published: 2010-07-20T00:00:00+00:00

Here is how to make a tetra-tetra flexagon: • You will need a sheet of paper, a pair of scissors, and a small piece of tape.

• Now follow these instructions and discover how the numbers get rearranged.

How to flex this flexagon: When you get to step 8, you are ready to flex.

a. Crease on the vertical line and fold the 1s back.

b. Now open along the vertical and the 2s appear.

c. Repeat steps a) and b) above and the 3s will appear.

d. Reverse the steps in order to return to the original front and back faces of 1s and 4s.

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