Place your paper down and decide which way you are going to fold it You can fold it up the way, down the way or from one side to the other. Choose what feels easiest and will give you the hole ...

For amusement he began to fold ... one can make flexagons with 9, 12, 15 or more faces: Tuckerman managed to make a workable model with 48! He also found that with a strip of paper cut in a ...