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Ages: 8 - 18
What is a Barn Owl Pellet
From YouTube, produced by Hilltribe Productions
How is a pellet formed?  This four minute video explains what a Barn Owl pellet is and the process for how it is formed. The video also addresses different types of pellets and how to determine if it is from a barn owl. This video would be a nice add... [more]
May 2, 2012 at 03:30 PM
Not Right For WatchKnowLearn
Ages: 9 - 13
Division 3: More Long Division (with remainder ) Examples
From YouTube, produced by Sal Khan
In an easy conversational tone, the instructor uses the computer screen as his 'blackboard' and different colors to emphasis his points. As this is an introduction to long division, this video is for elementary students (fourth, fifth, and sixth-grad... [more]
January 23, 2010 at 01:53 PM
Not Right For WatchKnowLearn
Ages: 10 - 18
The Crow Paradox
From YouTube, produced by NPR Science
Here's a surprise: Wild crows can recognize individual people ... especially those they don't like. They can pick a person out of crowd, follow them, and remember over time. Crows have developed this ability over time to adapt to human behavior towar... [more]
April 25, 2010 at 09:58 PM
Not Right For WatchKnowLearn
Ages: 12 - 18
Maggots for Medicine
From NationalGeographicVideo, produced by National Geographic
Documentary- Maggots for medicine??  A maggot is the larva of a fly. Believe it or not, some hospitals use maggots to clean infected wounds!  Maggots were used in the civil war to clean wounds.  Sterilized starving tissues are placed in a wound to ea... [more]
Found by tinag1974 in Medicine
July 10, 2009 at 09:34 AM
Not Right For WatchKnowLearn
Ages: 7 - 12
Sound - by StudyJams
From scholastic.com, produced by Scholastic
Sound is energy that travels as a result of vibration.  It can be characterized by frequency, loudness, and pitch, and is measured in decibels.  Learn more about sound with this cartoon animation from StudyJams.  A short, self-checking quiz is also i... [more]
Found by begamatt in Sound Waves
June 4, 2011 at 08:38 PM