Center of Mass
Introduction to the center of mass. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification.
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Introduction to Torque
An introduction to torque. Introduction to the center of mass. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. Run time 09:24.
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Introduction to Harmonic Motion
Intuition behind the motion of a mass on a spring (some calculus near the end). This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. Run time 10:30.
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Harmonic Motion, Part 2
Instructor tests whether Acos (wt) can describe the motion of the mass on a spring by substituting into the differential equation F=-kx. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. Run time 09:45.
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Liver Transplant
3-D animation discusses the functions of the liver, reasons for liver destruction, and why the liver would need to be transplanted. Basic overview of transplant process. Grades 7-12. 1:32 sec.
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Cold War: Afghanistan - part 1/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Cold War: Afghanistan - part 2/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Cold War: Afghanistan - part 3/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Cold War: Afghanistan - part 4/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Cold War: Afghanistan - part 5/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Life in Tropical Forests
Describes animals and plants found in tropical forests. Shows video of the specific animals. Also identifies the climate and locations. Mentions the effects of the destruction of the forests on the animals. Run time 1:56.
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Mass Composition Problem (Chemistry Involving Hydrogen)
Instructor discusses an exercise converting a mass composition to an empirical formula in this video. Instructor uses a black screen to write on with his cursor and uses different colors to highlight points. According to instructor, this is high school chemistry.
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Earth's Mass Extinctions
Asteroid strikes get all the coverage, but "Medea Hypothesis" author Peter Ward argues that most of Earth's mass extinctions were caused by lowly bacteria. The culprit, a poison called hydrogen sulfide, may have an interesting application in medicine. Ward explores what is needed for life to form and be maintained on a planet.
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Atoms and Molecules
This video is accompanied by text: "...An atom is the fundamental unit of chemical matter. The nucleus is an atom's center of mass and center of positive charge. The nucleus contains positively charged protons, shown in white, and uncharged neutrons, shown in blue. A cloud of negatively charged particles called electrons surrounds the nucleus.
All atoms of a given element have the same number of protons, but the number of neutrons can vary. Isotopes are atoms of the same element with diff

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Weather Fronts
This video discusses what a front is. They start with an air mass and the transitional zone is called a front. It is hard to tell if it is a cold or warm front. If the warm air is advancing it is a warm front. This video show the symbols that are used by meterologists. It shows how one mass moves over another mass. This is a good, basic video.
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The Mole

Using Avogadro's law, the mass of a substance can be related to the number of particles contained in that mass. Chemists have learned how to count molecules by weighing macroscopic amounts. Chemists must measure precise amounts for reactions to occur in an accurate manner. Analytical data and masses from the atomic chart are used to determine the number of atoms in a
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Against All Odds - Describing Relationships
'Segments describe how to use a scatterplot to display relationships between variables. Patterns in variables (positive, negative, and linear association) and the importance of outliers are discussed. The program also calculates the least squares regression line of metabolic rate y on lean body mass x for a group of subjects and examines the fit of the regression line by plotting residuals.'
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The Metric System
Learn about the relationships between units in the metric system and
how to represent quantities using different units. Estimate and measure
quantities of length, mass, and capacity, and solve measurement
problems.

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A Nation Divided Unit 9
Although the Civil War is viewed today through the lens of the Union’s
ultimate victory, for much of the war, that victory was far from
certain. By examining the lives of the common soldier, as well as
civilians, this unit examines the uncertainty and horrible destruction
in the war between the states. (This unit includes a facilitator guide,
video, and online text chapter.)

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Egalitarian America Unit 20
Brown v. The Board of Education was one of the significant results of
Americans demanding political, social, and economic equality. This call for parity in all walks of life was symptomatic of a growing social and political liberalism, which was fueled by the growing presence of mass media.

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