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Buoyancy
Here's a quick lesson in buoyancy. It compares the weight of an object in the air compared to in the water. English captions are at the bottom of the screen. The words are small so the viewer may want to open the video to 'full screen'.
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Biological Molecules
This silde show ia a useful overview of organic macromolecules, including aspects of their structure and function. There is no narration and no music. The viewer may have to open the slide show to 'full screen' as there is smaller print on some of the slides.
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Soil Texture - Environmental Science
Learn all about soil texture and how to test for clay, silt and sand. English captions are at the bottom of the screen. The words are small so the viewer may want to open the video to 'full screen'. Key vocabulary words include: sand, silt, clay, organic matter, porosity, permeability, and loam.  Run time 02:22.
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Giant Sunfish
Marine biologist Tierney Thys asks us to step into the water to visit the world of the Mola mola, or giant ocean sunfish. Basking, eating jellyfish and getting massages, this behemoth offers
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Liquid Expansion
This is a short, animated narrated video (02:25) that has an experiment that shows how liquid expands as a result of heat. For safety reasons, this experiment may be demonstrated by an instructor as the experiment requires a small, open flame. Some of the narration is accompanied by English captions.
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Transmission of Heat - Elementary Science
This is a short, computer-animated narrated video (03:13) that offers information about heat transmission using an experiment. Since this experiment requires an open flame, this experiment should be done in the presence of an adult/teacher. Some of the narration is accompanied by English captions.
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Introduction to Waves
In this video, the instructor offers an introduction to transverse and longitudinal waves. In an easy-to-understand, straightfoward manner the instructor explains while using computer software. Because the instructor writes on a dark screen, the viewer may want to open this video to 'full screen'.
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Amplitude, Period, Frequency and Wavelength of Periodic Waves
In this video, the instructor explores amplitude, period, frequency, and wavelength of periodic waves. In an easy-to-understand, straightfoward manner the instructor explains while using computer software. Because the instructor writes on a dark screen, the viewer may want to open this video to 'full screen'.
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Prometheus and Pandora
This simple video is narrated and apparently illustrated by a young child. Prometheus was a Titan God who stole fire from Zeus and gave it to human mortals.  Zeus punished him, by having him bound to a rock while a great bird ate his liver every day (only to have it grow back to be eaten again the next day).  Zeus, still angry, then sent Pandora (the first woman), to further punish humans.  Pandora had a box she was not supposed to open.  She opens it anyway, and when she does a blac
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"I, Too, Sing America" Poem by Langston Hughes
This is a video of a man reading Langston Hughes' poem "I, Too, Sing America" at an open mic night. The words are not on screen. The lighting makes it impossible to see the man's features. The sound quality is fine.  (0:47)
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How to Rationalize a Denominator
The instructor starts with a basic ptoblem to solve: one over the square root of two...then he moves on to more complicated problems. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen
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What is GLAST? Gamma Rays Part 1
The Universe is home to numerous exotic and beautiful phenomena, some of which can generate inconceivable amounts of energy. GLAST will open a new window on this high-energy world. With GLAST, astronomers will have a superior tool to study how black holes, notorious for pulling matter in, can accelerate jets of gas outward at fantastic speeds. Physicists will be able to search for signals of new fundamental processes that are inaccessible in ground-based accelerators and observatories. GLAST's s
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Change at the Top of the World
Marked by towering glaciers and vast expanses of tundra and open sea, the astonishing Arctic landscape exudes a feeling of immense power. But the region's ecosystem is actually one of the most fragile, and it is facing quick deterioration from man-made intrusions such as mining, oil drilling, and pollution - as well as global warming. Journey with explore to meet the region's people and find out how these issues are affe
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Island Universes: The Nature and Origin of Galaxies
Prof. Webb describes the basic characteristics of galaxies, outline the methods we use to study them, and highlights some of the main results and open questions in the field of galaxy formation and evolution.
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The Election of 1860 and the Secession Crisis
Open Yale University Lecture Series. Professor Blight classroom lecture lasts 52 minutes.It contains lots of detail about all of the reasons for the final secession.

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Public Speaking Tip for Kids - Opening Your Mouth when speaking

This video explains why people need to open their mouths when they speak.  When you do not open your mouth you mumbling and people cannot hear the speaker.  The more you open your mouth, the more you can project your voice and the more effortless speaking becomes.  Stretching your mouth before your speak will help to relax your mouth so you can open your mouth properly for good speaking.  Public speaking is a great activity for ki
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Decimals and Fractions
This video is from Sal Khan about converting decimals using the problem: Write 2.75 as a simplified fraction.

Mr. Khan uses computer software for demonstration. The screen is a little 'busy' so the viewer may want to open the screen to 'full screen' to see all more clearly. (02:42)

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Teaching English : How to Write an Essay
When writing an essay, introduce a thesis at the end of the introduction, present an argument using credible information and provide a conclusion that addresses specific points within the thesis. Write a powerful essay that will help open discussion for debate with tips from Michael Walter Mitchell, who has a masters degree in education from the University of California, Los Angeles. He has been teaching English and history at various secondary schools.
Filmmaker: Paul Volniansky

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Chimp Tools
Watch chimps using tools to crack open nuts and catch termites in this professional video from National Geographic. Run time 02:14.
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The First Amendment
A general overview of the First Amendment and its role in an open society. Good opening question that might be used by other teachers. Good discussion and well worth watching as the First Amendment is quite complex for students to understand.

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