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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What Is a Computer Router?
A computer router is used to take the data being transmitted between computers and make sure it gets routed to the right computer using a scheme called addressing. Connect a network of computers using a wired or wireless router with tips from a certified computer technician in video on computers. (02:06) There are English captions at the bottom of the screen.

Expert: Jonathan Ayres
Bio: Jonathan Ayres has more than 25 years of computer industry experience with all types of com

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What Are the Various Types of Printers?
There are many different types of printers, but the most common type of printer is the dot matrix printer. Learn about Inkjet printers and laser printers. (2:00) 
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I Like Spring - Song
What season do you like? This song - with the text on screen - sings about the four seasons, and the types of weather that accompanies each.... The singer in this song - likes different korean foods - depending upon what season it is!  The lyrics run across the screen as they are singing. Run time 01:34.
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What is ADHD?

Illumistream Health video.  Host is Dr. Matthew H. Erdelyi, Ph. D.  ADHD is the most frequently diagnosed childhood behavioral disorder. A child who suffers from ADHD demonstrates these behaviors for six months or more.  The exact cause of ADHD is still unknown.  ADHD can be treated with behavior modification and medication.  For people with ADHD the brain looks for more stimulation, which is more movement or changing the focus,
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Treating ADHD

Illumistream Health video.  Host is Dr. Matthew H. Erdelyi, Ph. D.  ADHD can be hard-hitting for children and their parents. There is no cure for ADHD, but the symptoms can be diminished.  Treating kids with ADHD is very important so they do not become antisocial or develop low self esteem.   The most successful treatments are medication, behavioral management strategies, and classroom accommodations.  The doctor can help with t
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Nebulae-Star Nurseries

An i-movie done by students for a science class.  Video explains that nebulaes are clouds of dust and galaxy.  Two different types; diffuse nebulae and planetary nebulae.  Scientists now know something about their nature, size, and appearance.  Video has great pictures and the narrators voice is very clear.  Good video for the student learning about nebulae, appropriate for middle school or high school students.


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