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Featured Videos
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Not Right For WatchKnowLearn
Ages: 13 - 18
3592 Views:
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Welcome to the Lymphatic System! This first video looks at the components of the lymphatic system, the functions of the lymphatic system, the composition of lymph and we define edema. This is Lesson 1 in our Lymphatic System series. This is part of o...ur Anatomy and Physiology lecture series. (06:40)
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October 4, 2014 at 12:06 PM
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Not Right For WatchKnowLearn
Ages: 11 - 18
2934 Views:
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"An architect, like any design professional draws on a wellspring of information. How we design is based to some extent on what we know." Excellent video. (05:20)
July 23, 2011 at 05:40 PM
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Not Right For WatchKnowLearn
Ages: 3 - 7
2971 Views:
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One of the most famous children's Christmas songs, "Up on the Housetop". Up on the Housetop, is one of the most popular Christmas songs for children. Your children will have so much fun singing this well-loved holiday song. This adorable kids Christm...as song will spark young imaginations. Toddlers, preschoolers and kindergartners will giggle with joy as they participate in this super simple, easy to learn song that makes learning fun and exciting. (02:05)
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December 16, 2013 at 12:55 PM
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Not Right For WatchKnowLearn
Ages: 10 - 18
3199 Views:
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How can the shadow of the tiny moon eclipse the sight of the gargantuan sun? By sheer coincidence, the disc of the sun is 400 times larger than the disc of the moon, but it's 390 times farther from Earth -- which means that when they align just right..., the moon blocks all but the sun's glowing corona. Andy Cohen details this extraordinary celestial phenomenon (and when it will next occur). Lesson by Andy Cohen, animation by Bevan Lynch. (03:45)
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August 19, 2017 at 11:04 AM
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Not Right For WatchKnowLearn
Ages: 10 - 18
3983 Views:
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Concepts covered: Reciprocal, Inverting a Fraction, Division of Improper, Proper and Complex Fractions and Mixed Numbers. Converting Complex Fractions to Simple Fractions is also done here. (12:16)
November 9, 2009 at 03:25 AM
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Not Right For WatchKnowLearn
Ages: 10 - 18
1681 Views:
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Albert Einstein 1879-1955. Albert Einstein developed the general theory of relativity. (02:09)
July 5, 2015 at 08:27 AM
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