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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Organic chemistry: Triple bonds cause linear configurations
Linear geometry of a triple bond. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understandi…
VideoFree1 minute
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Biology: Why biodiversity is distributed unevenly
Factors that influence the global distribution of biodiversity. Video by California Academy of Sciences. Biology Life is beautiful! From at…
VideoFree11 minutes
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Organic chemistry: Cis-trans isomerism
How to assign cis-trans terminology to double bonds. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course…
VideoFree5 minutes
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Organic chemistry: Signal characteristics - intensity
How dipole moment determines the intensity of a signal in an IR spectrum. Organic chemistry Sal and Jay cover topics covered in college org…
VideoFree6 minutes
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Organic chemistry: Pi bonds and sp2 hybridized orbitals
Pi bonds and sp2 Hybridized Orbitals Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understa…
VideoFree14 minutes
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Chemistry: States of matter
Introduction to the states or phases of matter. Chemistry Did you know that everything is made out of chemicals? Chemistry is the study of …
VideoFree19 minutes
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Cosmology and astronomy: Parsec definition
Parsec Definition Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the bra…
VideoFree8 minutes
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Biology: Big Guns: The Muscular System
Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax. Biology Life is beautiful…
VideoFree12 minutes
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Biology: Biology overview
Overview of biology, the study of life. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosyst…
VideoFree5 minutes
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Biology: 2015 AP Biology free response 7
Olfactory neurons. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the s…
VideoFree9 minutes
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Electrical engineering: RC step response - intuition
An RC circuit responds to a step of voltage with a smooth transition between the starting and ending voltage. The RC step response is a fun…
VideoFree10 minutes
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Electrical engineering: LED eyes
In this video we create and wire Bit-zee's tri-color LED eyes Electrical engineering Learn about electricity, circuit theory, and introduct…
VideoFree8 minutes
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Electrical engineering: Integral of sin(mt) and cos(mt)
Integrating sin(mt) and cos(mt) over a full period equals zero. Electrical engineering Learn about electricity, circuit theory, and introdu…
VideoFree6 minutes
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Biology: What is a biodiversity hotspot?
What a biodiversity hotspot is, and why these locations are important to preserve. Video by California Academy of Sciences. Biology Life is…
VideoFree6 minutes
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Cosmology and astronomy: Star field and nebula images
Star Field and Nebula Images Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn ab…
VideoFree7 minutes