Hexaflexagons - YouTube
Hooraaaay flexagons! Happy October. Here's part 2: http://youtu.be/paQ10POrZh8 Hexaflexagon Safety Guide: http://youtu.be/AmN0YyaTD60 Support me on Patreon: https://www.patreon.com/vihart Historical Note: This video is based on a true story. Arthur H. Stone really did invent the hexaflexagon after playing with the paper strips he'd cut off his too-wide British paper, and really did start a flexa
『フカシギの数え方』 おねえさんといっしょ！ みんなで数えてみよう！ - YouTube
「フカシギの数え方」おねえさんといっしょ！みんなで数えてみよう！ ※LINEスタンプ「フカシギお姉さんと仲間たち」をリリースしました。※ "The Art of 10^64 -Understanding Vastness-" Time with class! Let's count! LINE sticker "Combinatorial Explosion!" has been launched! http://line.me/S/sticker/1143771 「フカシギの数え方」で紹介している、組み合わせ爆発の例です。 「それでもね。私はみんなに「組み合わせ爆発のすごさ」を教えたいの！止めないで！」 お姉さんと子どもたちが実際に数え上げる大変さを伝えます。 This is an example about combinatorial explosion. "I want to de
120-cell
This short computer graphics animation presents the regular 120-cell: a four dimensional polytope composed of 120 dodecahedra and also known as the hyperdodecahedron or hecatonicosachoron. The figure is built up through a sequence of subsequent foldings: 5 segments form a pentagon, 12 pentagons form a dodecahedron and eventually 120 dodecahedra form the 3D shadow of a 120-cell. The animation is in
Doodling in Math Class: Infinity Elephants
More videos/info: http://vihart.com/doodling Doodling Snakes + Graphs: http://www.youtube.com/watch?v=heKK95DAKms Doodling Stars: http://www.youtube.com/watch?v=CfJzrmS9UfY Doodling Binary Trees: http://www.youtube.com/watch?v=e4MSN6IImpI http://vihart.com
The Confuzzle
How is this brain puzzle possible?! HOW TO MAKE: http://www.instructables.com/id/The-Confuzzle/ MUSIC: http://www.soundsnap.com/node/83748 Shady Optical Illusion 2: Crazy Diamonds http://www.youtube.com/watch?v=xl1lLze5ZpM Shady Optical Illusion http://www.youtube.com/watch?v=fJ2eUXxK2iU Many more science and "confuzzling" optical illusion videos: http://www.youtube.com/greeenpro2009 amazing "
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