March 6, 2018 06:10 pm PST
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/5khJkBuszHg/heres-how-a-high-school-teac.html
Here's how a high school teacher's "Mystery Box" works
High school teacher Bruce Yeany makes "mystery boxes" and challenges his students to figure out how they work. The one in this video hangs from the ceiling by a string. Another string protrudes from the bottom of the box. If you pull on the bottom string, the box rises. In the video you'll see how it works.
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/5khJkBuszHg/heres-how-a-high-school-teac.html
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