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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Health and medicine: Liver
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree6 minutes
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Biology: Potassium-argon (K-Ar) dating
How K-Ar dating can be used to date very old volcanic rock and the things that might be buried in between Biology Life is beautiful! From a…
VideoFree11 minutes
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Electrical engineering: Switch block (nested)
We can combine switch blocks for more advanced behavior Electrical engineering Learn about electricity, circuit theory, and introductory el…
VideoFree3 minutes
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Biology: Endocytosis, phagocytosis, and pinocytosis
Bulk transport: endocytosis, phagocytosis, and pinocytosis. Biology Life is beautiful! From atoms to cells, from genes to proteins, from po…
VideoFree5 minutes
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Health and medicine: Arteries, arterioles, venules, and veins
Learn the differences between these blood vessels! Rishi is a pediatric infectious disease physician and works at Khan Academy. These video…
VideoFree8 minutes
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High school biology: Cartilage
High school biology The musculoskeletal system Topic: Science Learn about all the sciences, from physics, chemistry and biology, to cosmolo…
VideoFree4 minutes
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Organic chemistry: Protection of alcohols
Use of protecting groups to "hide" alcohols while other groups in a molecule react. Organic chemistry Sal and Jay cover topics covered in c…
VideoFree8 minutes
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Health and medicine: Osteoarthritis vs rheumatoid arthritis treatments
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree8 minutes
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Chemistry: Shorthand notation for galvanic/voltaic cells
How to describe cell using shorthand notation. Chemistry Did you know that everything is made out of chemicals? Chemistry is the study of m…
VideoFree7 minutes
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Biology: Ecology introduction
Ecology is the study of how living things interact with each other and their environment. This includes living things (biotic factors) and …
VideoFree10 minutes
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Electrical engineering: Fourier Series introduction
The Fourier Series allows us to model any arbitrary periodic signal with a combination of sines and cosines. In this video sequence Sal wor…
VideoFree5 minutes
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Organic chemistry: Ortho-para directors III
Moderate and weak activation, weak deactivation. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Ba…
VideoFree10 minutes
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Health and medicine: Labor (parturition)
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree10 minutes
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Organic chemistry: Aromatic heterocycles I
The aromaticity of heterocycles (rings containing one or more non-carbon atoms). Organic chemistry Sal and Jay cover topics covered in coll…
VideoFree12 minutes
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Health and medicine: Units for common medical lab values
Figure out how to interpret the units in common medical labs including the CBC, Chem 10, and LFTs. Rishi is a pediatric infectious disease …
VideoFree11 minutes