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Introduction to second week

In this article Dr. Yossi Elran introduces what we’re going to learn this week
Word “introduction
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In the first week, you really only learnt the very basics – what are flexagons. You were introduced to three flexagons whose basic unit is a square. You practiced building flexagons and performed the book flex on two non-cyclic flexagons and on the cyclic magic square flexagon. These are the easiest flexes that you can do.

To really get into flexagons, though, you need to master at least the hexa-flexagon family, in particular the tri-hexa-flexagon and the hexa-hexa-flexagon which is what you’ll be learning this week. Both of these flexagons are based on equilateral triangles. We will also be taking a look at a tetra-octa-flexagon based on an isosceles right triangle, also known as a “silver” triangle.

As we go along, we’ll be learning many names for flexagons. Flexagon naming is a whole issue in itself, and we’ll be looking at that this week, along with our first encounter with Tuckerman diagrams – the map that helps us find our way among the many flexagon states. # Discussion

Any questions? Feel free to ask and don’t be shy 🙂

© Davidson Institute of Science Education, Weizmann Institute of Science
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Flexagons Galore: Advanced Flexagon Fun

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