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    Look Around You in Spring - The Science of Spring
    16:43

    Look Around You in Spring - The Science of Spring

     123  views
    Mid-West Farming Region - America's Heartland - 1960's
    13:52

    Mid-West Farming Region - America's Heartland - 1960's

     39  views
    Charles R. Drew - African American Inventions
    17:23

    Charles R. Drew - African American Inventions

     17  views
    Caterpillar Tractor Company: Heavy Equipment of the 1970's
    9:52

    Caterpillar Tractor Company: Heavy Equipment of the 1970's

     16  views 1 comment
    Proof that the Earth is Round / Curved
    10:03

    Proof that the Earth is Round / Curved

     228  views 7 comments
    The Doppler Effect: Sound, Stars, Distant Planets
    10:34

    The Doppler Effect: Sound, Stars, Distant Planets

     78  views
    World War I - Causes, Summary, History
    11:56

    World War I - Causes, Summary, History

     64  views
    Steps in Building Concrete Foundations - 1950
    25:07

    Steps in Building Concrete Foundations - 1950

     11  views
    How to Use a Slide Rule - Easy Explanation / Lesson - 1957
    30:51

    How to Use a Slide Rule - Easy Explanation / Lesson - 1957

     26  views
    The Story of the St. Lawrence Seaway
    12:29

    The Story of the St. Lawrence Seaway

     29  views
    San Francisco Police Department 1970's - Community Relations
    22:07

    San Francisco Police Department 1970's - Community Relations

     24  views
    Fishing Lake Michigan - Dr. Howard Tanner Brings Salmon to the Great Lakes
    24:59

    Fishing Lake Michigan - Dr. Howard Tanner Brings Salmon to the Great Lakes

     77  views
    Life Cycle of the Toad - What is an Amphibian?
    9:38

    Life Cycle of the Toad - What is an Amphibian?

     29  views
    Probability: An Introduction - Easy Explanation
    8:42

    Probability: An Introduction - Easy Explanation

     25  views
    Cathedrals: History, Architecture and Symbolism
    28:13

    Cathedrals: History, Architecture and Symbolism

     36  views
    What is Dutch Elm Disease? Can Dutch Elm Disease be Prevented or Treated?
    20:41

    What is Dutch Elm Disease? Can Dutch Elm Disease be Prevented or Treated?

     22  views
    French Influences in North America - Featuring Vincennes, Indiana in 1951
    10:22

    French Influences in North America - Featuring Vincennes, Indiana in 1951

     22  views
    Shakespeare: Selection For Children | Kids
    5:13

    Shakespeare: Selection For Children | Kids

     21  views
    Christmas in Appalachia: Whitesburg, Letcher County, Kentucky - 1965
    28:14

    Christmas in Appalachia: Whitesburg, Letcher County, Kentucky - 1965

     31  views
    Centripetal Force and Satellite Orbits
    9:51

    Centripetal Force and Satellite Orbits

     12  views
    How To: Stained Glass - Stained Glass Techniques
    19:51

    How To: Stained Glass - Stained Glass Techniques

     46  views
    The Sinking of the Lusitania - Unrestricted Submarine Warfare
    16:14

    The Sinking of the Lusitania - Unrestricted Submarine Warfare

     64  views 2 comments
    Atomic Energy: Easy Explanation w/ Models and Animation
    12:53

    Atomic Energy: Easy Explanation w/ Models and Animation

     25  views
    The Story of Christopher Columbus - Proving the Earth is Round
    14:44

    The Story of Christopher Columbus - Proving the Earth is Round

     13  views
    Joining and Gluing: How to Make Wood Joints by Hand - 1956
    14:07

    Joining and Gluing: How to Make Wood Joints by Hand - 1956

     21  views
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