Instructional Video3:01
Curated Video

Can You Be 1/3 Of A Race?

6th - 11th
If each person is the offspring of exactly 2 parents, is it possible to be 1/3 of a race? Blog post (text description) Sources I read about Gilgamesh on
Instructional Video12:04
Curated Video

The Seemingly IMPOSSIBLE Cyclist And Motorcycles Riddle

6th - 11th
Thanks to Alessio from Italy for creating this problem and sending it to me! A cyclist and a series of motorcycles are racing to the top of a long climb, and the cyclist doubles back. Given how many motorcycles passed the cyclist, can...
Instructional Video10:16
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Crash Course

Media and Money: Crash Course Media Literacy #5

8th - 12th Standards
Money talks ... especially in the media world! How do finances influence the media we see? Answer that, and many other questions using a video in a media literacy series. The narrator discusses how economic reasons influence media...