Description of Dilations
This is a brief portion of a video that describes a dilation.  To continue on how to perform a dilation you must watch the rest of the video at the link shown at the end of the video.

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Dilations in Matrix Form Review
A quick review of dilations in matrix form.  Examples are presented with marker on a white board.

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Dilations
A dilation is a non-rigid transformation, which means that the original and the image are not congruent. They are, however, similar figures. This video demonstrates how to perform dilations. (2:25)
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This video shows an instructor explaining how to add a rational expression.  First, he explains and shows how to factor the expression.  Then he continues to finish adding the expression.  He works quite quickly, but does work through the steps for the viewer to follow along.

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Adding and subtracting rational expressions is similar to adding fractions. This video clips explains how to add and subtract rational expressions by finding a common denominator and then adding the numerators. To find a common denominator, factor each first. This strategy is especially important when the denominators are trinomials. (2:25)
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Subtracting Rational Expressions
This video is a lesson on subtracting rational expressions.  The instructor uses a white board to walk the viewer through the steps needed to subtract an example expression.

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Simplifying Rational Expressions
This short video shows an instructor explaining how to simplify a rational expression.  He works quickly, but shows the steps necessary to simplify the expression.

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How to Simplify Algebraic Expressions
This is an excerpt and the rest of the video has to be view at the link provided in the video.  The video show how to simplify algebraic expressions by combining like terms.
Terms are the part of an expression to be added or subtracted. Terms
are called 'like terms' if the variables are the same. A coefficient is
the number that is multiplied by a variable in an algebraic expression.
In this lesson, Professor Burger demonstrates the commutative,
associative, an

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Simplifying Algebraic Expressions Using Distributive Property
This is a lesson on simplifying algebraic expressions.  It shows how to first use the Distributive Property and then combine like terms.  The audio is low and it is a little difficult to hear the narrator.

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Simplifying Rational Expressions
This instructor provides a lesson on simplifying rational expressions.  He works through an example of how to do this step by step.  It would be easiest to see the white board and problem he is working on if the video is on full screen.  It is hard to see the white board in a small window.

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Simplifying Rational Expressions
Solving rational expressions really refers to simplifying
rational expressions through reduction. A math teacher explains how to find a common factor when simplifying rational expressions using examples on a whiteboard.  As the narrator speaks text is shown of speech on bottom of screen.

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Domestic Animals
In this video they discuss what domestic animals are and gives some examples of domestic animals.  Some domestic animals they show are cats, dogs, horses, cows, and pigs.
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The Alphabet Song in Phonics
The alphabet song set to the phonic sound of each letter.
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Learn About the Explorer Vasco da Gama
Considered one of the most brilliant seaman, this is the video about his explorations in Africa and Asia. This is the story of his accomplishments and what it meant to Portugal. A brief overview.
(2:24)

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The Age of Exploration Rap
A World History wrote this rap and made the video for her World History students.  This is great and fun overview of the history of exploration.  Kids of all ages will love it!
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Solving and Graphing Inequalities
Inequalities are useful for finding a range of solutions. Solving and graphing inequalities is a key to finding and showing that range. This video clip explains how to solve inequalities using a lot of the same methods as those in solving multi-step equations when dealing with additive inverses, although some things are different when solving inequalities using multiplication. We graph inequalities using number lines. (1:32)
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Invasion of Poland 2 of 3
1943 War Department Film Bulletin No 48 produced by the Signal Corps Photographic Center. Invasion of Poland in Sept of 1939 which was the beginning of WWII. Contains footage shot by German troops and confiscated by the Allied Forces of artillery and infantry attacks which resulted in the capture of Warsaw.
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(5/12)Battlefield The Battle of Normandy
The Normandy beaches were chosen by planners because they lay within range of air cover, and were less heavily defended than the obvious objective of the Pas de Calais, the shortest distance between Great Britain and the Continent. Airborne drops at both ends of the beachheads were to protect the flanks, as well as open up roadways to the interior. Six divisions were to land on the first day; three U.S., two British and one Canadian. Disorganizati
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Engineering An Empire - The Aztecs - Part 3
'Aztec is a term used to refer to certain ethnic groups of central Mexico, particularly those groups who spoke the Nahuatl language and who achieved political and military dominance over large parts of Mesoamerica in the 14th, 15th and 16th centuries...' (Aztec, Wikipedia, 2009). This History Channel documentary is suitable for older middle and high school students and is narrated by various scholars.
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Signs Of Stroke
There are several warning signs that can alert you to someone having a stroke. Here’s what to look for. Short video with a doctor explaining what to look for.  56 sec.
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