Looks like vi heart took down all of her youtube videos - which is where i first learned of flexagon.
Sad to hear! I noticed that some are available through the Internet Archive:
Explorable Flexagons: Learn to create and flex flexagons (2020)
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Re: Explorable Flexagons: Learn to create and flex flexagons (2020)
#12Looks like vi heart took down all of her youtube videos - which is where i first learned of flexagon.
Seems she's moved on - now at Microsoft https://en.wikipedia.org/wiki/Vi_Hart those videos were such fun, shame they're not there anymore.