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: Adding up resistance problem
Here's a chance to see if you can combine what you know to add up resistance in series AND in parallel. Rishi is a pediatric infectious dis…
VideoFree3 minutes
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Health and medicine: What is Eisenmenger syndrome?
Eisenmenger's syndrome is when blood in the heart shunts from right-to-left due to increased pressure in the right ventricle. This increase…
VideoFree10 minutes
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Cosmology and astronomy: Cosmological time scale 1
Cosmological Time Scale 1 Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about…
VideoFree7 minutes
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Chemistry: Rate of reaction
Definition of reaction rate, and examples of calculating the average rate of reaction. Chemistry Did you know that everything is made out o…
VideoFree9 minutes
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Chemistry: 2015 AP Chemistry free response 3b
Calculating the concentration of weak base using information about equivalence point in a titration. From 2015 AP Chemistry free response 3…
VideoFree6 minutes
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Organic chemistry: Diels-Alder: regiochemistry
How to determine the regiochemical product of a Diels-Alder reaction Organic chemistry Sal and Jay cover topics covered in college organic …
VideoFree4 minutes
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Organic chemistry: Multiple substituents
The directing effects of substituents on a benzene ring. Organic chemistry Sal and Jay cover topics covered in college organic chemistry co…
VideoFree7 minutes
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Health and medicine: Cervical spine protection in airway management (not a substitute for formal training)
Cervical Spine Protection in Airway Management. This is for education only. It is not a substitute for formal training or licensure. Every …
VideoFree11 minutes
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Cosmology and astronomy: Plate tectonics: Evidence of plate movement
Plate Tectonics -- Evidence of plate movement Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy…
VideoFree13 minutes
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Biology: Biodiversity and extinction, then and now
How common is species extinction? Some is always happening. But over geologic time, biodiversity has increased despite several mass extinct…
VideoFree12 minutes
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Biology: Phases of meiosis I
How homologous chromosomes separate into two sets. Prophase I, metaphase I, anaphase I, and telophase I. Biology Life is beautiful! From at…
VideoFree10 minutes
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Chemistry: Dipole moment
Predicting the molecular dipole moment based on the molecular geometry. Chemistry Did you know that everything is made out of chemicals? Ch…
VideoFree9 minutes
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Health and medicine: Colon, rectum, and anus
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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Cosmology and astronomy: Scale of earth and sun
Scale of Earth and Sun Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about th…
VideoFree10 minutes
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Health and medicine: Cyanotic heart diseases - Diagnosis and treatment
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree4 minutes