Here's how a high school teacher's "Mystery Box" works

Originally published at: https://boingboing.net/2018/03/06/heres-how-a-high-school-teac.html

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I had it figured as connected pulleys spools before it got to the reveal.

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I assumed a set of pulleys or spools as guides for the string.

I…uh…What is the mystery here?!

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A mistery for kids and dumbs just like me…

Four engineering solutions to the same problem. Neat!

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I am reminded of seeing a teacher demonstrating Heron’s fountain with non-seethrough containers, and then asking us what was going on. https://en.wikipedia.org/wiki/Heron’s_fountain

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Just like my favorite He-Man toy did…

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@quori - if you assumed that it was a set of pulleys or spools, that means you already knew about pulleys and spools. If you hadn’t, this would be instructive. It was not made for people like you.

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