Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
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Electrical engineering: Motors/propulsion
In this video we re-wire Bit-zee's motors to include longer wires and then we re-attach them to his frame. This video shows more detail tha…
VideoFree6 minutes
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Chemistry: VSEPR for 5 electron clouds
VSEPR for molecules with five electron clouds including examples for trigonal bipyramidal and seesaw-shaped molecules. Chemistry Did you kn…
VideoFree15 minutes
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Electrical engineering: Robot construction
Basic construction to get started Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also hav…
VideoFree1 minute
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Chemistry: Unusual oxygen oxidation states
Determining oxidation numbers in hydrogen peroxide, H₂O₂, and oxygen difluoride, OF₂. Chemistry Did you know that everything is made out of…
VideoFree4 minutes
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Electrical engineering: Demo: ant bot
demonstration of a basic ant bot Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have…
VideoFree1 minute
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Health and medicine: Meet the skin! (Overview)
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree5 minutes
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Health and medicine: Arteriosclerosis, arteriolosclerosis, and atherosclerosis
Learn the difference between Arteriosclerosis, Arteriolosclerosis, and Atherosclerosis! Rishi is a pediatric infectious disease physician a…
VideoFree9 minutes
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Health and medicine: Shock - oxygen delivery and metabolism
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree9 minutes
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Health and medicine: What is tertiary syphilis?
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree9 minutes
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Electrical engineering: Sine and cosine from rotating vector
One way to generate sine and cosine is to track the motion of a rotating vector. Animated. Electrical engineering Learn about electricity, …
VideoFree4 minutes
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Health and medicine: Sepsis: Systemic inflammatory response syndrome (SIRS) to multiple organ dysfunction syndrome (MODS)
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree8 minutes
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Electrical engineering: Fourier coefficients for sine terms
Fourier coefficients for sine terms Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also h…
VideoFree7 minutes
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Electrical engineering: Diode
Introducing the diode as a circuit element. A diode conducts current in one direction but not the other. Electrical engineering Learn about…
VideoFree11 minutes
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Health and medicine: Preventing TB using the "4 I's"
Learn how to help prevent TB disease using Intensive case finding, Isoniazid, Isolation, and Immunization. These videos do not provide medi…
VideoFree12 minutes
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Organic chemistry: Cahn-Ingold-Prelog system for naming enantiomers
Cahn-Ingold-Prelog System for Naming Enantiomers Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Ba…
VideoFree11 minutes