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: What is vasculitis?
Vasculitis is a group of medical conditions which cause damage to the blood vessels through inflammation. Depending on which blood vessels …
VideoFree7 minutes
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Health and medicine: Microglia
This video describes the structure and function of microglia. By Matt Jensen. Health and medicine The medical world can be a confusing plac…
VideoFree5 minutes
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Biology: Introduction to the atom
Learn how atoms are made up of protons, neutrons, and electrons. Elements are defined by the atomic number, the number of protons in the nu…
VideoFree21 minutes
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Cosmology and astronomy: Milankovitch cycles precession and obliquity
How changes in Earth's rotation can effect Earth's seasons and climate Cosmology and astronomy It's a great, big universe out there. In thi…
VideoFree13 minutes
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Health and medicine: Retrieval cues
Learn about how priming, environmental context, and internal state affect memory. Health and medicine The medical world can be a confusing …
VideoFree5 minutes
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Organic chemistry: Bond-line structures
How to draw bond-line structures Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understandin…
VideoFree13 minutes
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Health and medicine: Healing after a heart attack (myocardial infarction)
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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Chemistry: Groups of the periodic table
What is a group in the periodic table, and what do elements in a group have in common? Chemistry Did you know that everything is made out o…
VideoFree8 minutes
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Biology: Ecological succession: Change is good
Hank examines how ecological communities change after a disturbance. Biology Life is beautiful! From atoms to cells, from genes to proteins…
VideoFree9 minutes
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Organic chemistry: Reactivity of carboxylic acid derivatives
How to analyze the reactivity of the carboxylic acid derivatives using induction and resonance effects. Organic chemistry Sal and Jay cover…
VideoFree9 minutes
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Health and medicine: Acute complications of diabetes - Hyperosmolar hyperglycemic nonketotic state
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree10 minutes
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Health and medicine: Action potential patterns
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: Overview of Sensation and Meissner's Corpuscle
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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Organic chemistry: Hydroboration-oxidation of alkynes
Two-step reaction in which an alkene is converted to an alkene with a hydroxyl substituent (which may tauromerize to a carbonyl). Organic c…
VideoFree9 minutes
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Health and medicine: Intro to neurodevelopment milestones
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree10 minutes