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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Chemistry: Vapor pressure
Vapor pressure, volatility, and evaporation. Chemistry Did you know that everything is made out of chemicals? Chemistry is the study of mat…
VideoFree18 minutes
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Biology: Your immune system: Natural born killer
Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us…
VideoFree15 minutes
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Health and medicine: Medicare overview
Sal talks with Professor Laurence Baker of Stanford Medical School Health and medicine The medical world can be a confusing place. Patients…
VideoFree16 minutes
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Chemistry: Molecular weight percentages
Calculating the mass percentages of the elements in benzene after calculating the molecular weight of benzene. Chemistry Did you know that …
VideoFree7 minutes
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Organic chemistry: Amine naming introduction
Amine naming introduction. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of b…
VideoFree7 minutes
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Organic chemistry: Alcohol properties
Alcohol properties. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understanding of basic hi…
VideoFree9 minutes
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Organic chemistry: Fischer projection practice
How to assign configurations to chirality centers from a Fischer projection Organic chemistry Sal and Jay cover topics covered in college o…
VideoFree9 minutes
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Biology: Chordates
Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the next time some…
VideoFree12 minutes
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High school biology: Intro to the endocrine system
Basic overview of hormones and the endocrine system High school biology The nervous and endocrine systems Topic: Science Learn about all th…
VideoFree10 minutes
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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