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Not Right For WatchKnowLearn
Ages: 9 - 15
Gear Basics
From YouTube, produced by ScienceOnline
This video is designed to provide a basic introduction to gears suitable for grades 4 to 9. Gear rotation, gear ratio, rates of rotation, mechanical advantage and examples of use are included. A second video, " Time, Clocks and Gears" explains how ge... [more]
December 5, 2009 at 11:15 PM
Not Right For WatchKnowLearn
Ages: 15 - 18
The Top Ten List of Algebra Mistakes
From YouTube, produced by Thinkwell Videos
This is a humorous look at the mistakes students commonly make in Algebra. The instructor uses voice overs with vintage video clips to make his point.  (05:02)
January 27, 2010 at 03:38 AM
Not Right For WatchKnowLearn
Ages: 7 - 16
Onomatopoeia Examples
From YouTube
This excellent video was created by a college student and uses simple animation to show words that represent sounds. Suitable for third-graders and older. (02:36)
December 23, 2009 at 09:35 PM
Not Right For WatchKnowLearn
Ages: 12 - 18
The American Revolution
From YouTube
On April 19, 1775, the shot heard round the world was fired at the Battle of Lexington and Concord beginning America's Revolutionary War.  In this video you will learn what lead to the war, and the things that happened as a result. (02:01)
December 10, 2009 at 05:30 PM
Not Right For WatchKnowLearn
Ages: 11 - 16
Molecular Visualizations of DNA
From YouTube, produced by Walter and Eliza Hall Institute of Medical Research
Amazing CGI visualization of molecular biology's central dogma. It shows animations of DNA coiling, replication, transcription and translation. (07:47)
November 25, 2009 at 12:38 PM