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Ages: 10 - 18
2249 Views:
Where Did Earth's Water Come From?
From YouTube, produced by Alex Reich, Peter Reich, Emily Elert
Earth's surface is 71% covered by water today, but it didn't start out that way. So where do we think Earth got its water? (02:59)
Found by teresahopson in Origins of Oceans
June 22, 2014 at 05:21 AM
Not Right For WatchKnowLearn
Ages: 13 - 18
4064 Views:
Measuring the Speed of Sound
From YouTube, produced by Kamal Wafi
The instructor uses Audacity software, a click, a tube and a simple formula to calculate the speed of sound. (05:33)
Found by Kamal101 in Sound Waves
June 16, 2012 at 06:28 AM
Not Right For WatchKnowLearn
Ages: 12 - 18
6383 Views:
Newton's 3 Laws, With a Bicycle
From YouTube, produced by TED education
Why would it be hard to pedal a 10,000 pound bicycle? This simple explanation shows how Newton’s 3 laws of motion help you ride your bike.  (03:32)
Found by Rockefellerteacher in Newton's Laws of Motion
January 8, 2013 at 09:17 AM
Not Right For WatchKnowLearn
Ages: 12 - 18
4873 Views:
Mardi Gras Traditions
From YouTube, produced by WatchMojo.com
In this video clip, from WatchMojo.com, learn about the origins of the Mardi Gras celebration and about the Mardi Gras traditions. (01:02)
Found by CourtneyMorrison in Mardi Gras
March 27, 2012 at 10:01 PM
Not Right For WatchKnowLearn
Ages: 11 - 16
15370 Views:
War of 1812 and the History of the Star-Spangled Banner
From YouTube
David Barton gives a brief history of the War of 1812 and the true story behind our National Anthem. (07:45)
Found by ZG in American Flag
July 11, 2009 at 08:12 AM
Not Right For WatchKnowLearn
Ages: 12 - 18
4432 Views:
Solving For X Using Cupcakes
From YouTube, produced by Bill Nye
In this video, Bill Nye and "Toni the Baker" use cupcakes to explain the steps to solving a simple algebra equation. They balance the equation by getting all the x variables on one side and then simplifying.  The video has the theme song at the begin... [more]
Found by ggurley in Simplifying Expressions
November 24, 2010 at 08:30 PM
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