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Pre-Calculus: Graphs of Rational Functions
This is an excellent video detailing how to make graphs of the sine and cosine functions. The tutorial details how to use the coordinate plane to make graphs of the function that are easy to read and understand. This is particularly useful for understanding how to use the sine and cosine function. This is an exerpt. (3:40)
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Dinosaur Extinction Asteroid
At the end of the Cretaceous, 65 million years ago, not only did the dinosaurs disappear completely, but so did flying reptiles (pterosaurs), and marine reptiles (ichthyosaurs and plesiosaurs). In fact, between 60 and 80% of all animal species, including many marine forms, disappeared. Most turtles, crocodiles and primitive birds also disappeared but some survived to give rise to modern forms.

There have been numerous theories to account for the extinction of dinosaurs. But during t

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A Mixture-Type Word Problem (Coins)
Instructor believes that one of the easiest of all algebra word problems to understand is the coin problem since you, as a student, have some understanding of coins. Suitable for high school students. Instructor uses white paper and marker in front of camera.
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Italians in the world - part 4

(1924-1932)This episode discusses Zefferino Poli who is an emigrant who accepted the dollar religion, he grasped at once the American system.  He was a frugal man and soon owns many theaters.  Video also discusses other emigrants who influenced the Italians that were living in the United States.  Despite the racism and economic difficulties the Italian passion for politics reemerges in the emigrant
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Analogies and Idioms

Analogies; compare two things to show how they relate. Video gives examples of some analogy, for example, scissors are to paper as saw is to wood.  There is also an analogy given as a quiz.  This would be helpful for parents to interact with kids or have kids do on their own to see if they understand the concept.  Idioms are taught next.  An idiom is an expression that says one thing that actually means another.  Examples are giv
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Idioms in English - 'Blue'
Feeling blue about not understanding idioms? Expand your informal
English knowledge with this lesson. These are all common expressions
and phrases that use the color blue.

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The Bible: A Brief History
A brief history of the bible.  This video contains scriptural references and how the bible came to be in existence and how it's history is important to clearly understanding it.
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Understanding Food - Part 1 - Nutrition by Natalie
Nutrition by Natalie-Understanding What You Eat. In this video Natalie explains what vitamins, minerals and carbohydrates do for your body.  It also discusses the importance of water.  This video is in a lecture format.
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Using Cloud-Seeding (Geo-Engineering) to Solve Global Warming
This clip from the "Five Ways to Save the World" details a cheap, simple, and low-risk way to compensate for global warming.

If the reflectivity of clouds could be increased slightly, sufficient sunlight would be reflected to compensate for any future release of CO2 into the atmosphere. (09:37)

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Potential and Capacitance
Benjamin Franklin, the great 18th-century American scientist, who later dabbled in politics, was the first to propose a successful theory of the Leyden Jar. He gave positive and negative charges their names, and invented the parallel plate capacitor. Electrical potential, the potential of charged conductors, equipotentials and capacitance.
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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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Forests in Flux
Science examines the future of the world's forests against a backdrop of climate change and intensifying human activity. This video presentation discusses some of the challenges of global forest governance. (08:54)
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Understanding the Roman Catholic Church
The purpose of this video is to help Protestant Christians and others develop a better understanding of the Roman Catholic Church, its history and basic beli...
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The GeometricTransformations
Many times in mathematics and in geometry in particular,
visualization of the concepts that are being taught is difficult for
students. This problem can be avoided with the use of a tool such as
Geometers Sketchpad. One of the best attributes of this program is that it is not a drill and practice program, but instead it requires the
students further develop their understanding of mathematical concepts. This lesson was designed to help make the concepts of translations, ro

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Investigating Wisconsin History | The First Peoples of Wisconsin
The First Peoples of Wisconsin - Angie, the series host, investigates the mystery of who made the rock art at Roche-A-Cri State Park. As she discovers clues to prehistoric people, Angie learns that both archaeology and oral tradition can contribute to our understanding of their lives. Angie also realizes that some mysteries may never be solved.

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How Does Your Memory Work? Part 5 (final)
This segment begins with a haunting story of a man who has lost most of his memory.
 
You might think that your memory is there to help you remember facts, such as birthdays or shopping lists. If so, you would be very wrong. The ability to travel back in time in your mind is, perhaps, your most remarkable ability, and develops over your lifespan.

Horizon takes viewers on an extraordinary journey into the human memory. From the woman who is having her most traumatic memo

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How Does Your Memory Work? Part 4
This segment tries to determine what a memory is. Brief microscopic images of the brain are shown. This segment is ten minutes long.

You might think that your memory is there to help you remember facts, such as birthdays or shopping lists. If so, you would be very wrong. The ability to travel back in time in your mind is, perhaps, your most remarkable ability, and develops over your lifespan.

Horizon takes viewers on an extraordinary journey into the human memory. From

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Electing a U.S. President - in Plain English
This video is a simple guide to understanding the U.S. election process, particularly the Electoral College. The video uses illustrations and simple descriptions to help you understand how a president is elected.  Run time 03:43.
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Autism & Pediatric Diseases : Different Types of Autism

Presented by Dr. David Hill. There are many different types of autism, known as the autism spectrum.  The main thing they have in common is that they have trouble communicating with other people.  There are three levels of autism, Asperger's syndrome, difficulty communicating with others, interpreting their intentions or emotions, they tend to go on with subjects that interest them, may have a hard time getting jokes, but can live o
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Financial Crisis Explained: Subprime Mortgage
This video explains the global pool of money and specifically what a subprime mortgage is and how it lead to the financial crisis.(Amateur video that explains things well...and enthusiasm!)

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