How We Digest Food
3-D animation shows how food is broken into smaller molecules and then absorbed into the body. Grades 5-12. 46 sec.
The Digestion Process
This video describes the digestion process. It explains it is the process by which the body breaks down food so it can absorb nutrients. Chewing food is called mechanical digestion; chemical digestion occurs in the stomach and small intestines. There are graphics and images to illustrate the explanation in detail.
The Large Intestine
This short video shows the stage in digestion where the large intestine works. It explains that during digestion water is reabsorbed into the large intestine.
Digestive System Animation
The digestive system provides us with the energy we need, by helping us process the food we intake. This video examines the flow of food through our system. Â
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How the Body Works: Muscles Move Joints: An Illustration-Running Time is 0:28.
A quick 30 second illustration of the way in which arm muscles contract and relax in opposing muscle groups. Narrator talks as visual is displayed. Running Time is 0:28.
How to Write a Haiku Poem
This video explains the structure of a Haiku. Syllables are explained and colorful examples appear on a black computer screen. Essential elements of this type of poetry are indentified. Audio quality is low is some parts of the video. (2:17)
World War II: Operation Barbarossa - part 2/5
June - December 1941 The German invasion of the Soviet Union, up to the failed assault on Moscow in the winter of 1941. Interviewees include General Walter Warlimont, Albert Speer, Paul Schmidt and W. Averell Harriman.
How to Read a Protractor
The instructor uses a protractor, pen, and paper to demonstrate how to use a protractor to measure angles.
Factoring Special Products
This instructor in this video, Sal Khan, discusses how to factor special products.  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 student or educator may want to open the video to 'full screen' as the instructor is using a black background and the writing is small.
Solving Systems of Linear Equations by Graphing
Instructor uses a white board to demonstrate graphing systems of linear equations. Â Examples include being given two linear equations, finding the slope and y-intercept, and then graphing to determine the point of intersection. (4:49)
Systems Of Equations With Fractions - Using Substitution
In this video lesson, students learn to solve systems of linear equations that involve fractions. Students also learn to solve linear systems of equations by the method of their choice using the following rules: if one of the variables cancels out when the equations are added together, then use addition, and if a variable is already isolated in one of the equations, then use substitution.
 (3:23)
Simplifying Rational Expressions
This video walk the learner through the steps to simplify rational expressions. Â Specific circumstances are discussed and several problems are modeled. Â
Adding and Subtracting Rational Expressions
In this video, the instructor talks about adding and subtracting rational expressions. He first defines what rational expressions are and how they are different from equations. In general, the instructor states that the idea is to make the expression into a single fraction if possible. The instructor walks the viewer step by step through three different examples of adding and subtracting rational expressions.
Basic Algebra : How to Write an Algebraic Expression
Writing an algebraic expression in mathematics involves any combination of variables or letters and numbers. Understand the concept of algebra and its flexible expressions with insight from a math teacher in this video on mathematics.
Expert: Jimmy Chang
Bio: Jimmy Chang has been a math teacher at St. Pete College for nearly a decade. He has a master's degree in math, and his specialties include calculus, algebra, liberal arts, math and trigonometry.
Filmmaker: Christop
Simplifying Rational Expressions
In this teacher created video, the teacher defines a rational expression. Then the teacher models the steps of simplifying the rational expression on a white board. ( 1:26)
Exponential and Logarithmic Equations - Yay Math
Solving exponential equations by using a common base. Introduction to logarithmic notation. White board in a class setting, some interaction, engaging, several examples of increasing complexity. The discussion is clear and understandable. Preview - full version at http://video.google.com/videoplay?docid=-7783301627139702841&q=source:012956945238798337823&hl=en
Produced by Robert Ahdoot, yaymath.org
Squeeze Theorem
Mr. Khan offers this video of the intuition (but not a proof) of the Squeeze Theorem. Mr. Khan uses the Paint Program (with different colors on a black screen)Â to illustrate his points. Sal Khan is the recipient of the 2009Â Microsoft Tech Award in Education. (07:37)
Calculus Limits: A Numerical Approach
In Calculus, the term limit is used to describe the value that a function approaches as the input of that function approaches a certain value. This video explains the two ways to demonstrate Calculus limits: a numerical approach or a graphical approach. In the numerical approach, we determine the point where the function is undefined and create a table of values to determine the value of the variable as it approaches that point. (1:45)
One-Sided Limits
This video explains one-sided limits. A limit is the value that a function approaches as the input of that function approaches a certain value. In Calculus, sometimes functions behave differently depending on what side of the function that they are on. By definition, a one-sided limit is the behavior on only one side of the value where the function is undefined. (3:02)
Calculus Limits: A Graphical Approach
This video explains the graphical approach to determine a limit. There are two ways to determine a limit: a numerical approach or a graphical approach. In the graphical approach, we analyze the graph of the function to determine the points that each of the one-sided limits approach. (3:02)
