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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Subordinate Clauses
Lecture lesson on subordinate clauses, also known as dependent clauses.  This lesson shows that they function as if they were nouns, adverbs, or adjectives.  Teacher on the clip shows examples of subordinate clauses on a whiteboard. 

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Compound-Complex Sentences Review
A compound-complex sentence contains two or more
independent clauses and one or more dependent clauses. This clip gives a review of verbal phrases and sentence structure.

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Anatomy of a Kidney
There is a very brief video with still images of the kidney. This is a quote from the video:
"This cross section of a kidney, almost three times life-size, shows its blood supply and one of the filter tubules, a nephron, highly magnified. The nephron is a highly specialized coiled tubule measuring up to one inch in length. There are more than one million nephrons in each kidney. They function as the kidney's filter units. The kidneys filter unwanted materials from the blood and regulate th

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The Function of the Liver
Did you know that the liver is the largest organ in the human body? Learn more in this computer-animated video (04:02) that describes where the liver is in the body and its function. This video has English captions at the bottom of the screen. This may be good for big classrooms where sound may not travel well.
Note: There is a little static as the narrator appears to be too close to the microphone while speaking. Also, in the summary the word 'learned' is spelled incorrec

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The Stomach - Elementary Science
This is a brief computer-animated video (01:02) that describes the structure of the stomach and how the stomach works. Narration with soft background music.
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How The Eye Functions: Part I -
Video which identifies the main structures of the eye and how they function. Although this is an old video in black and white, the information in good. Grades 7-12. 4:55 min.
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Graphing Quadratic Functions
Instructor uses a white board to demonstrate graphing quadratic functions.  Example models taking a quadratic function in standard form, determining if the function opens up or down, finding the axis of symmetry and vertex.  The instructor then creates an x/y table and uses those points to complete the graph.
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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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Introduction to Function Inverses
Introduction to Function Inverses. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a little low. (09:05)
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Function Inverse Example 1
Function Inverse Example 1: f(x)= -x+4
This is a continuation of Mr. Khan's Introduction to Function Inverses. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a little low. (06:43)

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Function Inverses Example 2
Function Inverse Example 2: f(x)= (x + 2) squared +1
This is a another installment of Mr. Khan's short 4-part series on Function Inverses. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a little low. (07:12)

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Function Inverses, Example 3
Function Inverse Example 3: f(x)= (x - 1) squared -2
This is the last segment of Mr. Khan's short 4-part series on Function Inverses. These installments started with Khan's Introduction to Function Inverses. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a l

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Lugosi teaches math - polynomial approximations1
In this video, Béla Lugosi teaches the advanced mathematical concepts of a series of functions and polynomial approximations. This discusses and explains the idea of approximating a function by polynomials and questioning/observing the degree of contact.  This is an excellent video for advanced math students to explore and learn this complex concept.
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Defining a Limit Numerically

An instructor uses a whiteboard and a discontinuous function to demonstrate the concept of a limit.  He uses the point where the function is undefined and a table of values to determine the value of the limit as it approaches that point.
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ThinkBlocks Tutorial: Metaphors and Similes
'Analogies are more than just things we might find on an SAT or college entrance exam. Analogies are foundational to our thinking. Using ThinkBlocks to reveal the structure and relationships of analogies, similes and metaphors will develop advanced thinking skills in children and adults.'
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Human Anatomy - Vertebral Column
This is a computer-animated video (03:16) that describes the structure and function of the vertebral column. This video has English captions at the bottom of the screen. This may be good for big classrooms where sound may not travel well.

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Living Band-Aid Beats Like a Heart
Video shows current research in heart tissue structure and repair. Jordan Lancaster and Steven Goldman, researchers from the Southern Arizona Veterans Administration and the University of Arizona, put rat heart cells on a piece of synthetic mesh and within a few days, it started beating. The hope is that down the road the patch of cells could be used to treat damaged hearts.
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Humerus Tutorial
Video uses hand drawn diagrams to identify and discuss the structure and physiology of the upper arm. Very thorough. Good review for a test. Music in background is a little distracting, and video is a little pixelated. Grades 9-12. 4:50 min.
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Human Anatomy - HIP
This is a computer-animated video (02:14) that describes how the function of hip bones and how they work. This video has English captions at the bottom of the screen. This may be good for big classrooms where sound may not travel well.

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