Introduction to Cancer
Sal Khan offers an introduction  to cancer and how it is the by-product of broken DNA replication. The instructor uses drawings to illustrate mutations, apoptosis, mitosis, cell replication, replication of cells. (12:36)
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Pottery How to Guide (pt 7)
A How to Guide to Pottery. In this video ceramic pottery is shown and different types of pottery are discussed. This piece used mid-fired red clay.  Just like there are different types of wood there are different types of clay that can be used.
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Supplies for Making Pottery
Take your clay and roll it out flat. Have many types of texturing materials such as bark, stamps, cookie cutters for the students to use.  English captions. (1:13)
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Photography: Overview of the Mechanics of a Camera
This video is a lesson excerpt . Digital cameras have many features and different prices.  Point and shoot, advanced images and SLR types all work the same.  This video discusses how the camera works. (4:03)
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How To Take A Good Photograph-part 2
There are different types of angles when you are taking a photograph.  There are high angles, low angles and objective angles.  Photographs from all these angles are shown and a description is given on the impact of taking pictures from these angles.
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Earth in Motion: Seasons - Interactive Site
Earth's orbit around the Sun, together with the tilt of its axis, results in periodic climate changes around the globe known as seasons. Different locations experience different types of climate changes. For example, some places have extreme seasonal changes in temperature, while others have little temperature change but may have rainy and dry seasons. This interactive activity from the Adler Planetarium explains why Earth experiences seasons and has users properly place Earth in its orbit for p
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5 Majoy Types of Insects
Scientist have identified 5 major types of insect. This video gives a brief review of each. Learn more about tnsects in this educational video from dizzo95. This video would be a nice review.  Run time 01:31.
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Breakdown of Blood Retinal Barrier In Diabetic Retinopathy
Description of how the retinal pigmented epithelial cells maintain the barrier between blood and the retinal tissue. Simple animation with text and computer generated narration. Grades 9-12. 1:13 min.
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The Influenza Virus
3-D animation shows how the influenza virus invades the body, takes over cells, and spreads the infection. The infected cells burst and more cells become infected.  Explains how the specific cells of the immune system work to attack the flu virus. 2:07 min.
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Flu Attack! How A Virus Invades Your Body
When you get the flu, viruses turn your cells into tiny factories that help spread the disease. In this animation, NPR's Robert Krulwich and medical animator and medical animator David Bolinsky explain how a flu virus can trick a single cell into making a million more viruses. (MHS gr 7 1C)

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First Archery Practice
Types of archery bows are explained as well as arrows and equipment. A good starting video, but it needs more details such as how to hold the bow and aim it.   Run time 3:12
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Chemistry for Dummies - Three Types of Bonds
This video is a student-made chemistry project. Host, Ian Lepo, and Guest Star, David Oles discuss the three types of chemical bonds (ionic, covalent, and metallic) in this first episode of Chemistry for Dummies. Sound quality is low but information is still usable. Run time 03:49.
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Cooking With Sugar
In this interactive activity adapted from the Exploratorium, learn how different ingredients and the application of heat influence how different types of candy are made. This activity presents a scientific definition of sugar, including an illustration of a sugar molecule; explains how candy makers prevent crystallization from ruining their creations; and addresses the question: Is sugar bad for your teeth? There are several short clips (0:10-0:15 each) that are combined in this interactive link
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How To Use The Two Types of Quotation Marks
A five minute  podcast about quotation marks good for all ages.    How to use two types of quotation marks and when not to use quotation marks is explained.  Several examples are illustrated.  

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Identifying Variables
This video will review the three types of variables in an experiemnt (independent, dependent, and constants) and will identify them in a series of experiment.  The video uses a narrator to provide explanation along with written definitions and images on a screen. Run time 05:55.
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What is a stroke?
An enormous amount of information about stroke types, stroke symptoms, and other educational information about strokes. A doctor and professor of neurology talks about what a stroke is, why a stroke happens, the symptoms, and how it affects people.  (3:14)

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Understanding Diabetes
Twenty million Americans have diabetes and the disease can take multitudinous forms. In this video, a doctor explains how the sugar in our diet is processed and how diabetes affects that processing. Discusses diagnosis and types of diabetes.  3:13 min.
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Immune Cells in Action
In this video segment from The Secret of Life, you'll look through a microscope at a virus attacking a cell. Viruses continue to replicate until they break apart the host cell and start spreading throughout the body, destroying healthy cells along the way. You'll learn how the immune system overpowers a virus with white blood cells and creates the antibodies that kill the same types of viruses quickly if they return. Closed captioning included. Run time 01:40.
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Dengue Virus
This visualization adapted from the University of Massachusetts Medical School represents the process by which a dengue virus releases its genetic contents inside a host cell, allowing viral replication. The key players are proteins found on the viral surface called envelope proteins, which change their structure when the virus is endocytosed, or taken inside the cell. This structural change enables the viral membrane to fuse with the endosomal membrane, and the virus' RNA to enter the cytoplasm
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Types of Dyslexia
Types of Dyslexia. Part of the series: Dyslexia. Types of dyslexia include phonological dyslexia, orthographic dyslexia, dyscalculia and dysgraphia, all of which present difficulties in different areas of speech and reading. (2:18)
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