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The non-cyclic tetra-tetra-flexagon

Watch the video and follow the instructions to build the non-cyclic tetra-tetra-flexagon: Download the file below which has the templates for the back and front of a rectangular sheet of …

Nomenclature. How to name flexagons.

Before we go any further, we need to discuss nomenclature, the naming system for flexagons. Unfortunately, as often happens in math and science, there are a few systems for naming …

The tri-hexaflexagon

My first flexagon This is your first experience with folding a flexagon. The way we’re going to work in this course is as follows: Download the file below which has …

The history of flexagons

So, you know now that flexagons were invented by the British mathematician Arthur Stone, while he was still a graduate student in math. Together with other notable mathematicians and physicists, …

Meet lead educator Dr Yossi Elran

Welcome from Dr Yossi Elran This course is all about flexagons and the math behind twisted strips of paper. Each week will have a theme, and we’ll learn about it …