Get smart curated videos delivered to your inbox.   SUBSCRIBE
The Kid Should See This

Vi Hart’s Hexaflexagon

Watch more with these video collections:

Grab some strips of paper and join math video storyteller and “mathemusician” Vi Hart as she introduces the Hexaflexagon:

This video is based on, and in honor of, Martin Gardner’s first Mathematical Games column from 1956, “Hexaflexagons,” which can be found here (pdf): http://maa.org/pubs/focus/Gardner_Hexaflexagons12_1956.pdf

October 21st is Martin Gardner’s birthday, which is why every October the recreational mathematics community celebrates his life and work. This year we’re having hexaflexagon parties. You can join in too: puzzles.com/hexaflexagon/

You can find more about hexaflexagons all over the internet. flexagons.net has a lot of patterns for different kinds of flexagons, or here’s the wikipedia page.

In the archives, watch more math videos and more shape videos.

This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content.

Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.

🌈 Watch these videos next...

Will YouTube Ever Run Out Of Video IDs?

Rion Nakaya

What’s the difference between horns and antlers?

Rion Nakaya

What is Infinity? A mathematician explains in this Elevator Pitch

Rion Nakaya

Universal Calendar Puzzle: Figure out the day of the week for any date ever

Rion Nakaya

Understanding tether dynamics through kite flying

Rion Nakaya

The Universal Tea Machine, a huge mechanical ‘adding computer’

Rion Nakaya

The Universal Pattern Popping Up in Math, Physics, and Biology

Rion Nakaya

The Story of Zero – Getting Something from Nothing

Rion Nakaya

The Sphere-Packing Problem

Rion Nakaya