Learn to Create and Flex Flexagons

jhncls · on July 4, 2020

Vi Hart is amazing with flexagons [0].

[0] https://www.youtube.com/watch?v=VIVIegSt81k

ketzo · on July 5, 2020

This is where I first learned about them! Absolutely loved watching her videos when I was younger and just getting into math/science as a concept.

skipnup · on July 5, 2020

And of course the best of all hexaflexagon videos: https://youtu.be/GTwrVAbV56o

hadlock · on July 5, 2020

Came here to post this

timpark · on July 4, 2020

I made some tetra-tetra-flexagons for my wedding, and in the process made an ImageMagick script to take four images and turn them into two, one for each side of the sheet of paper.

https://www.timpark.org/making-a-tetratetraflexagon/ (unfortunately some of the external links are broken, I should do some editing)

aebtebeten · on July 4, 2020

related, the mexiflexagon: https://www.youtube.com/watch?v=GTwrVAbV56o

mkl · on July 4, 2020

And more related, also from Vi Hart: https://www.youtube.com/watch?v=VIVIegSt81k, https://www.youtube.com/watch?v=paQ10POrZh8, https://www.youtube.com/watch?v=AmN0YyaTD60

JKCalhoun · on July 4, 2020

The Hexaflexagon unit from "Things of Science" (June 1960):

http://underlandia.com/index.php/2017/07/17/things-of-scienc...

ScottBurson · on July 5, 2020

I still have a 24-faced hexaflexagon I made in 1975, using onionskin paper and an HP plotter. (Thinness and accuracy are critical for high-order flexagons.)

markandrewj · on July 6, 2020

Weird flex, but OK.

ascotan · on July 4, 2020

[flagged]

dang · on July 4, 2020

"Please don't post shallow dismissals, especially of other people's work. A good critical comment teaches us something."

https://news.ycombinator.com/newsguidelines.html

_qwfv · on July 4, 2020

It's going to blow your mind when you realize all words are made up. Even more so when you find out that definitions change and new words are invented every year.

jaclaz · on July 4, 2020

Though fees may apply, JFYI ;-):

http://www.marriedtothesea.com/030807/dictionary.gif

detaro · on July 4, 2020

It's an established mathematical term for these things. Of course, mathematical terms tend to be "made up" at some point, but I don't think that's a useful distinction.

rjsw · on July 4, 2020

Have you never read any Martin Gardner books ?

The wikipedia page [1] on the things is a good introduction too.

[1] https://en.wikipedia.org/wiki/Flexagon