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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Biology: Fertilization terminology: gametes, zygotes, haploid, diploid
How haploid gametes (sperm and egg cells) combine to form a diploid zygote with two sets of chromosomes. Biology Life is beautiful! From at…
VideoFree10 minutes
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Biology: Thomas Hunt Morgan and fruit flies
Thomas Hunt Morgan's pioneering fruit fly work that helped validate the chromosomal theory of inheritance. Biology Life is beautiful! From …
VideoFree11 minutes
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Biology: Carbon 14 dating 2
Carbon 14 Dating 2 Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the s…
VideoFree4 minutes
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Biology: Evolution clarification
Clarifying some points on evolution and intelligent design. Biology Life is beautiful! From atoms to cells, from genes to proteins, from po…
VideoFree9 minutes
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Biology: Inflammatory response
Overview of the inflammatory response. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosyste…
VideoFree15 minutes
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Biology: Evaporative cooling
Evaporative cooling. Why sweating cools you down. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations …
VideoFree5 minutes
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Chemistry: Second Law of Thermodynamics
The Second Law of Thermodynamics: there can be no spontaneous transfer of heat from cold to hot. Chemistry Did you know that everything is …
VideoFree10 minutes
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Chemistry: More rigorous Gibbs free energy / spontaneity relationship
More formal understanding of why a negative change in Gibbs Free Energy implies a spontaneous, irreversible reaction. Chemistry Did you kno…
VideoFree14 minutes
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Biology: Phases of meiosis II
How sister chromatids separate to form gametes. Prophase II, metaphase II, anaphase II, telophase II. Biology Life is beautiful! From atoms…
VideoFree11 minutes
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Biology: Embryonic stem cells
An overview of early development of a zygote to an embryo. Embryonic and somatic stem cells. Biology Life is beautiful! From atoms to cells…
VideoFree20 minutes
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Cosmology and astronomy: Structure of the earth
Structure of the Earth - crust, mantle, core Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy,…
VideoFree10 minutes
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Chemistry: Plotting data for a first-order reaction
Example of graphing first-order rate data to see a linear relationship, and calculating rate constant k from the slope. Chemistry Did you k…
VideoFree9 minutes
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Cosmology and astronomy: Black holes
Black Holes Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn about the brain-ben…
VideoFree10 minutes
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Organic chemistry: Aromatic stability II
How the geometry of a molecule plays into aromaticity. Why cyclooctatetraene is not aromatic like benzene. Organic chemistry Sal and Jay co…
VideoFree10 minutes
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Organic chemistry: Bicyclic compounds
How to name bicyclic compounds. Numbering the chain and Identifying bridgehead carbons. Organic chemistry Sal and Jay cover topics covered …
VideoFree11 minutes