Khan Academy
Introduction to Chirality, Stereochemistry, Organic chemistry
An introduction to chirality and whether molecules can be superimposed or not. The terminology for those molecules is given along with the relevance of that characteristic.
Khan Academy
Alcohols, Alcohols, Ethers, Epoxides, Sulfides, Organic chemistry
Sal approaches the functional group OH. He gives details of the term alcohol and clarifies the differences from drinking alcohol. Again, there is practice in naming molecules and identifying the location of functional groups.
Khan Academy
Subtracting Fractions with Like Denominators
Elementary school students can observe Sal as he subtracts fractions that have a common denominator. Because this concept is fairly straight forward, he focuses on simplifying his answer. A great video for those needing extra support in...
Khan Academy
What is Inside a DVD Player? (5 of 5), Electrical engineering
You probably know that a laser is used in a DVD player, but how exactly does it work? The last of five videos explains the laser setup in the DVD player and how it transmits stored information. The video begins with a drawing and ends...
Khan Academy
Compare the Hair Dryer Motor to the One You Can Build
Could you build a motor for a hair dryer? Viewers of a short video watch as the narrator compares a hair dryer motor to an electric motor built from a kit. Each component of the hair dryer motor correlates to a component in the electric...
Khan Academy
Mouse Interaction, Computer Programming
Drawing objects based on where the user's mouse is located can be a beneficial and fun coding activity for new JavaScript coders. Here, the speaker shows how to use the mouseY and mouseX variables in a small section of code that draws a...
Khan Academy
Cosmological Time Scale 1, Scale of the Universe, Cosmology and Astronomy
A scaled timeline highlights periods relevant to us since the Big Bang. Events on the timeline include the formation of Earth, the extinction of dinosaurs, and the emergence of modern humans.
Khan Academy
Plate Tectonics: Geological Features of Divergent Plate Boundaries
Sal explains the mechanism of crust lift developing at hot spots. The density changes at that point, continuing to cause depressions. The depressions and thinner layers fill with water, resulting in a flooded rift valley.
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Intergalactic Scale, Scale of the Universe, Cosmology and Astronomy
Sal narrates the last video, concentrating on the scale between stars and galaxies themselves.
Khan Academy
Double Newman Diagram for Methcyclohexane
Help your class visualize cyclical ring-based carbon molecules. He translates a sawhorse projection into a "Double Newman" diagram, which helps clarify the respective energies and stabilities of molecules.
Khan Academy
Free Radical Reactions, Substitution and Elimination Reactions, Organic Chemistry
Explain the concentration of free radicals and how they interact with ions and charged molecules.
Khan Academy
Stereoisomers, Enantiomers, Diastereomers, Constitutional Isomers and Meso Compounds
Sal works through a list of examples that demonstrate and review the different types of compound classification.
Khan Academy
Chiral Examples 1, Stereochemistry, Organic Chemistry
Sal's video is a selection of structure diagramming examples. Sal draws each out and demonstrates whether each is chiral or not. The video also presents a large number of relevant terms and reviews the nomenclature of conformations.
Khan Academy
Red Shift, Scale of the Universe, Cosmology and Astronomy
The Red Shift concept can be one of the most confusing in physics. Learners may find it helpful to start with learning more about the Doppler Effect before introducing this video.
Khan Academy
Naming Alkyl Halides, Substitution and Elimination Reactions, Organic Chemistry
Sal introduces the elements other than carbon that can branch off the main chain of a hydrocarbon. The examples in this video have double bonds, and the practice involves many of the nomenclature rules that he has already covered.
Khan Academy
Organic Chemistry Naming Examples 3, Organic Chemistry
In the third of five videos, Sal continues to work through examples of more complicated carbon chains.
Khan Academy
Plate Tectonics: Difference Between Crust and Lithosphere, Cosmology and Astronomy
Explore the tectonic plates that make up the surface of our Earth and their movement, as well as the terminology of the Earth's structure.
Khan Academy
Entegegen-Zusammen Naming Scheme for Alkene Examples, Organic Chemistry
Salman Khan works through several isomer diagrams and confirms which is named "cis" or "trans", "e" or "z".
Khan Academy
Amine Naming Introduction, Amines, Organic chemistry
The naming rules that Salman Khan recaps at the start of this video will be more useful with another lecture or previous videos. However, by talking about different groups, Sal can explain some of the characteristic behavior and the...
Khan Academy
Cis-Trans and E-Z Naming Scheme for Alkenes, Alkenes and Alkynes, Organic chemistry
Sal diagrams the but-2-ene molecule. He gives the vocabulary used to describe alkenes of the same formula but different structure.
Khan Academy
Stellar Parallax Clarification, Cosmology and Astronomy
A short clarification begins where the last video on stellar distance left off. It intends to clarify the trigonometry involved in using Parallax to determine stellar distance. The instructor uses the equations from the previous video to...
Khan Academy
Radius of Observable Universe (Correction), Cosmology and Astronomy
A two-minute video corrects a slight error in the previous Khan Academy video about the observable universe. Sal points out that 300,000 years does not significantly impact the number 13.7 billion, or the estimated time of the Big Bang.
Khan Academy
Supernova Clarification, Stars, Black Holes and Galaxies, Cosmology and Astronomy
In need of clarification on the last Khan Academy video on supernova? A short video explains that while humans observed the event that became the Crab Nebula 1,000 years ago, the actual event occurred 7,500 years ago.
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 6)
Sal reinforces the concepts taught in the first video on Singapore's four-digit addition with a series of addition problems. The video would be an excellent homework assignment. Ask your class to view it at home and write a paragraph on...