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Numerous, Various, Revealing, Ubiquitous, and Teachable Documents
Featured here are three photographs, three posters, and three textual documents from the National Archives that relate to several of the 100 Our Documents. They are teachable documents that inspire creative methods for introducing students to the milestones and reinforcing their significance.
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Lesson 91: Brazil on the news- Hosting a conference for the UN
In this lesson you’ll get to know important things that are happening in Brazil and you’ll understand a bit more about our health system.

Check out our website, brazilianportuguesepod.com and find out more how we can help you improving your Portuguese!

VIS-5D VR Animations: R-Aquarii Jet
The VIS-5D scientific visualization system has been extended to include an interactive mode controlled by virtual environment devices. This animation is part of a series of live screen captures demonstrating this capability.
Author(s): Steve Maher,J. Hollis,Richard Lyon,John Dorband,W.

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Visible Earth: City Lights of Europe
Growth in "mega-cities" is altering the landscape and the atmosphere in such a way as to curtail normal photosynthesis. By using data from The Defense Meteorological Satellite Program's Operational Linescan System, researchers have been able to look at urban sprawl by monitoring the emission of light from cities at night. By overlaying these "light maps" onto other data such as soil and vegetation maps, the research shows that urbanization can have a variable but measurable impact on photosynthe
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The Scale of the Solar System
Users can read about how distances are measured in the solar system. Attempts by early astronomers to estimate distances and ongoing work to establish and refine the astronomical unit (the mean distance from the Earth to the Sun) are described. This is part of NASA's online book entitled "From Stargazers ...
Author(s): David Stern, Ph.D.

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Solar System Puzzle Kit
Students may color and assemble this eight-cube paper puzzle of the solar system. Parts for printing, instructions, and reference materials on the planets are provided.
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Our Solar System - Size Of Planets and Stars to Scale
This video shows the comparative sizes of Pluto, Mercury, Mars, Venus, Earth, Neptune, Uranus, Jupiter, Saturn, the Sun and many other giant stars.  It is set to great music, composed by Steve Jablonsky.  Fantastic visual comparison of the planets in our Solar System.
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Systems and Subsystems, Basic Facts
NASA Connect segment explaing basic facts about systems and subsystems. The video also introduces the study of Earth System Science. (05:54) The video is slightly blurry at times.
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Transcendentalism
This video is accompanied by text. "In his 1794 book The Age of Reason, Thomas Paine advanced a religious philosophy called Deism that struck at the tenets of organized religions, particularly Calvinism as it was practiced by the Puritans. Paine claimed that churches were “set up to terrify and enslave mankind, and monopolize power and profit.” These thoughts were shocking to Americans who were imbued with a strong religious tradition. At the same time, Paine’s ideas appealed to many Ameri
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Counting from 1 to 999 in Chinese
This video shows how the Chinese counting system is constructed from a simple logical system, which uses just 12 characters (and therefore sounds) to count from 1 to 999. Run time 04:04.
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Termites - Life's Ultimate Architects
This documentary video is suitable for older elementary, middle school, and high school students and features the ability of termites to create a structure that has air conditioning, a sewage system, food storage, and fungus cultivation.
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Aristotle Part 4
Aristotle is one of the most important founding figures in
Western philosophy. He was the first to create a comprehensive system of Western philosophy, encompassing morality and aesthetics, logic and science, politics and metaphysics. Aristotle's views on the physical sciences profoundly shaped medieval scholarship, and their influence extended well into the Renaissance, although they were ultimately replaced by modern physics. In the biological sciences, some of his observations were only

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Solar System 101
This video from National Geographic Kids provides an overview of the formation of the solar system and gives a brief description of the characteristics of each planet.
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Scale of the Universe
An overview of what the solar system is and uses animation to good effect. However, the numbers are really difficult for the student to understand unless there is a handout and other resources to help with this video.

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Scale of the Universe
This video begins with a textbook and zooms out to the Earth, then the Sun, the Solar System, the Milky Way etc.  The video continues to expand out as the narrator gives information about each of its stopping points.  Run time 02:10.
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The Indian Removal Act
This four minute video shows how  the American government's Policy of "removal" on Native-American land started. This video offers some depth to this movement including how they used the justice system to try and prevent being forced from their land. President Jackson ignored the legal decision. Students should clearly be able to see a cause and effect for this action.
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Colonies Diversity
As the colonies along the Atlantic coast took shape in the mid-eighteenth century, they became grouped by region: New England, middle, Chesapeake, and southern colonies. Among these regions there were some general similarities, including temperate climates and more than adequate average rainfall, which are critical factors for maximizing agricultural production.
Surplus crops provided the most important exports in all regions except in New England, although what colonists grew depended on

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Science Olympiad Scrambler Brakes
A common event at Science Olympiad competitions is the Scrambler. The Scrambler must be a vehicle designed to use a falling mass to transport an egg a particular distance that students will be informed of only at the time of the event. This video displays a fairly simple braking system that is very beneficial to student success. Run time :20
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How Was Florida's Coral Castle Built?
From DragonflyTV. Aaron and Tevi are really into exploring the science of places like the Egyptian pyramids and England's Stonehenge. They wanted to figure out how one man moved all of the massive stones to make Coral Castle. They knew he used simple tools so they built a similar set-up, using a fulcrum and lever. Then they built a tripod with a block and tackle system (pulley), also based on the original design, to see if it could lift the huge limestone blocks off the ground. The vi
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