What is "Authentic" Assessment?
A three minute video that explains what authentic assessment means according to Educators at New York's School of the Future. Gives specific examples and planning ideas on how to implement this assessment. A good professional development video.
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Preschool Teaching Supplies
Preschool Teaching Supplies. Part of the series: Teaching & Writing. Supplies for preschool teachers should include colorful puppets, building materials, easels and a variety of art supplies to help students learn and stay entertained at the same time.

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Tips to keep kids interested in reading during summer.
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Teaching Students With Autism to Communicate Feelings
A short video showing how pictures can be used to help autistic students communicate and reduce stress. Part of a series that may have other helpful insights about dealing with autistic students.
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Aeneid 13 (1, 84-91)
Here the winds are finally released, and cause havoc on the waves.
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Number of diagonals in a hexagon explanation
This is video using a computer monitor to show how many diagonals are in a hexagon.  A hexagon has a total of 9 diagonals.

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This is a 3 minute story of a student earning money by doing various jobs.  The student puts all the money earned and jobs on a bar graph.  This clip give an overview of bar graphing for 4th grade math.

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Introduction to Frequency Tables
A brief introduction to the use of Frequency Tables.  Definitions of statistics, data, and frequency table are discussed.

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How to Prove Triangles are Similar
Students learn the following theorems related to similar
triangles. If an angle of one triangle is congruent to an angle of
another triangle, and the lengths of the sides that include each angle
are in proportion, then the triangles are similar (Side-Angle-Side
Similarity Theorem, or SAS Similarity Theorem). If the lengths of the
sides of two triangles are in proportion, then the triangles are
similar (Side-Side-Side Similarity Theorem, or SSS Similarity Theor

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How to Find the Perimeter of a Triangle
This is a very brief tutorial that focuses on solving the perimeter of a triangle. The teacher uses a small whiteboard for instruction. (01:51)
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The History of Valentine's Day
This professional video explores the history and legends surrounding Valentine's Day. The presenter explains the legend of St. Valentine. The end of the video consists of impromptu interviews of customers at a greeting card store.  (03:59)
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Linear Inequalities - A Visual Proof
An instructor shows why we flip the sign when multiplying or dividing by a negative when solving inequalities. Â He uses a flip chart and shows several examples including both inequalities and word problems.
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How to Divide Inequalities
How to Divide Inequalities. Part of the series: Math FractionsÂ and Equations. When dividing inequalities, treat the equation like any other standard equation. Flip the inequality sign when dividing an inequality by a negative number with help from a math author and teacher.
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World War II: Invasion Of Poland - part 5/5
September 1939 - May 1940 The German and Soviet invasions of Poland, the Winter War, the sinking of the Graf Spee and Britain's apathy during the "phony war" until Britain's defeat in its first military engagement with German land forces in Norway, which led to the rise of Winston Churchill. Interviewees include Lord Boothby, Lord Butler, Admiral Charles Woodhouse, Sir Martin Lindsay and Sir John "Jock" Colville.
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Preventing Stroke
Up to 80 percent of strokes that occur in the United States each year could be prevented! In this video, a doctor give practical advice to stroke prevention.Â  3:33 min.
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Music Key Signatures Explained
This is an excellent teaching tool for high school and and advanced musical instumentalist.
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Scales octaves on a piano. This is a wonderful tool to use for instruction for middle and high school age children.
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Who Invented Subtraction?
Subtraction was invented in the same way as addition and
counting, in that it has always existed. In this video learn from a mathematics instructor who invented subtraction.

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When the Moors Ruled in Spain (4 of 11)
'The description Moors has referred to several historic and modern populations of Muslim (and earlier non-Muslim) people of Berber and Arab descent from North Africa, some of whom came to conquer and occupy the Iberian Peninsula for nearly 800 years' (Moors,Wikipedia, 2009). This video is suitable for older middle school and high school students.
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Dinosaur Builder
Step aside, bone diggers and fossil hunters. Scientists are now using computer modeling and a better understanding of living animals to bring dinosaurs back to life, virtually.
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