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Explaining the Phases of the Moon
This video combines animation and photos of the moon to explain why the moon's 8 phases occur.  A narrator walks the viewer through each phase of the moon's orbit around Earth

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Phases of the Moon 3D Animation
This brief video is a full photo realistic animation of the complete cycle of the moon as seen from the Northern Hemisphere. There is no narration or music, but could easily be used while discussing a waxing and waning moon.  (01:33)
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The Moon with Bill Nye
This Bill Nye the Science Guy video explores the science of the moon. He discusses orbit, moonlight, phases of the moon, and surface of the moon.  Silly at times, but good science. 7:54 min.
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The Moon and Earth's Tides
Well-done animation of the effect of the moon on the Earth's tides. Addresses tidal bulge and sun and moons gravitational pull.   (01:54)
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The Mystery of Earth's Tides
Video discusses the tides of the oceans and how the gravital pull affects these tides. 
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Astronomy Tides
There is a lot packed into this short (01:19) video about the moon and its effect on the Earth's tides.
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What are Meteors, Meteoroids, and Meteorites?
This is a segment explaining what meteors, meteoroids, and meteorites are and the differences in these.  Produced specifically for students and is suitable for elementary and older students. 
(This is an Emmy award-winning series of instructional programs that introduces students in grades 3-5 to NASA and integrates mathematics, science, and technology through the use of Problem-Based Learning (PBL), scientific inquiry, and the scientific method. The series seeks to motivate students to

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Americas: Mayan, Aztec, Inca
This is a 40 minute lecture with pop-up ads. It covers the Mayan, Aztec, and Incas in good detail with photos. A great overview for students, but it does move rapidly despite the lenght of the video. Lots of interesting facts that could result in interesting projects and debates.
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Ancient Pyramid Tomb Discovered in Mexico
A 1:40 video that explains what was in this tomb, but also helps students understand the importance of studying artifacts to provide insights about the history of ancient people.
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Exchanges in the New World
Columbus’s famed voyage in 1492 joined two very different worlds. For thousands of years, Europeans and Native Americans lived completely separate lives, unaware of the others’ existence. When Columbus stepped onto the rocky soil of San Salvador, he started a historic chain of events that affected the lives of millions of people on both sides of the Atlantic.
Columbus and later explorers discovered a land unlike anything they had experienced. They encountered neatly patterned park-like

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Spanish Mission System
As the Spanish empire spread over the southern portion of the present-day United States, the mission system was developed to facilitate colonial expansion and to pacify the Indians. Catholic priests and friars ventured into remote areas to build missions where they worked side-by-side with the Indians planting crops, hunting game, and preaching Christianity. The missionaries also taught the Indians about Spanish culture, including language, arts and crafts, and politics.
Each mission typi

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Karajan - Beethoven Symphony No. 5 - Part 1
Karajan Conducting Beethoven's 5th Symphony, Part 1 (Movements 1 and 2). Very old and rare film, no longer in print, recorded in 1966. From http://www.musopen.com
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4th Piano Concerto in G Major, Op. 58 - Last Movement
Although Beethoven had performed his 4th Piano Concerto privately, in 1807, the public did not hear it until the 22nd of December, 1808. On that night they also heard four hours of new music in a cold concert hall (the heating system had failed to work properly).    After he personally played this concerto at the December 1808 concert, Beethoven never publicly performed with an orchestra again.
In this clip, we see Murray Perahia playing the last movement of Beethoven's 4th Piano Concer

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Inca- Time Life (V)
Primarily covers Moche (pre-Incan) civilization including Temple of the Sun, pottery, human sacrifice, canals for irrigation, and footage of reed boats. (Caution: reference to "exotic sexual practices" during pottery display.) Also deals with grave robbers.
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Building the Great Pyramid - Part 1 of 6
This video is the first part of a reconstructed life story of Nacht, one of workers who was part of building king Kufu's great pyramid. The introduction shows the setting in place and time 2480BC in the Sahara desert. There are recontructed images and explanations of the way in which the pyramids were built.
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Building the Great Pyramid - Part 4 of 6
This is part 4 of a reconstructed life story of Nacht, one of workers who was part of building king Kufu's great pyramid. It shows some reconstructions of scenes of the time and some rituals.
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Defcon 2 - Cuban Missile Crisis Part 5 of 6
Produced by The Discovery Channel, a historical documentary commemorating the 40th anniversary of the Cuban missile crisis hosted by internationally acclaimed writer Tom Clancy.
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Engineering an Empire - The Persians - Part 4/5
Persia became an empire under Cyrus the Great. This History Channel documentary offers information about the evolution of the empire of Persia and is suitable for high school students. Narration by Peter Weller and other scholars.
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Projectile Motion (Part 6)
How fast was the ball that you threw upwards? More on the ball throwing game. This video, which is suitable for high school students, starts with a black screen because the instructor, in his easy, conservsational tone, uses it as a 'chalkboard.'
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The Fall of France - Documentary part 10 of 12
This part of the documentary shows the beginning of the fall of the allied forces in France. The German superiority is explained. There is reference to the role the air force played in this battle. (10:00)
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