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Featured Videos
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Not Right For WatchKnowLearn
Ages: 8 - 13
1992 Views:
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This cartoon animation shows you how to make "rain" at home and explains the water cycle. Key words like evaporation, condensation, precipitation, hail stones, and water vapor. (02:48)
January 20, 2012 at 05:07 AM
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Not Right For WatchKnowLearn
Ages: 15 - 18
8599 Views:
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This is a video about stress in humans. Using tools like treadmills and wicked math problems, these scientists are on a mission to prove that stress isn't all in your mind. Join them on an incredible hunt for the source of stress and learn how stres...s shows up as a chemical in your bloodstream. It also points out the physical exercise helps the body deal with psychological stresses. (55:49)
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July 10, 2009 at 09:23 AM
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Not Right For WatchKnowLearn
Ages: 14 - 18
3069 Views:
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In this video, the instructor, 'Chemguy', teaches alkynes and discusses shapes of molecules. This video is suitable for high school chemistry students shapes of molecules. (05:34)
January 7, 2010 at 01:13 AM
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Not Right For WatchKnowLearn
Ages: 10 - 18
4689 Views:
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Earth provides a comfortable and temperate environment for a wide variety of living organisms. However, in the past few decades, scientists have discovered unusual life forms thriving in areas where the majority of living things on Earth could never ...survive, such as by deep sea vents or in dry deserts. This video segment, adapted from NOVA, explores extreme forms of life on Earth, the importance of liquid water, and the possibilities of life elsewhere in the solar system. Closed captioning included. (04:44)
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September 5, 2010 at 07:11 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
2909 Views:
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The Nile River, which is more than 4000 miles long, contributed to the success of all the early African empires because of its many uses: water for farming, transportation and merchandise. Learn more with Discovery Channel's "Assignment Discovery" vi...deo clip. (2:42)
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March 12, 2012 at 07:33 PM
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Not Right For WatchKnowLearn
Ages: 3 - 8
21215 Views:
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This video is from the classic story Are You My Mother? by P.D. Eastman. The video includes text and images from the book, along with a child's narration. The book is part of the suggested reading material listed on CoreStandards.org for grades K-1.... (06:25)
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October 11, 2011 at 05:35 PM
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