Khan Academy
Getting a Seed Round From a VC, Stocks and Bonds, Finance and Capital Markets
After reviewing his hypothetical business startup, Sal outlines the stock distribution based on a pre-money valuation and a $5 million investment from an angel donor. He reviews the fluctuating percentage of ownership once an investor is...
Khan Academy
Floating Exchange Effects on China
Now that we understand what the Chinese Government does to keep its currency artificially suppressed, Sal explores what might happen if they were to allow a free-floating exchange against the dollar. He outlines the hypothetical ripple...
Khan Academy
Debt Loops Rationale and Effects
Now that scholars understand more about currency imbalance and artificially suppressed currency, Sal discusses the motivations of the different actors. He briefly touches on the difficulty of unwinding a cycle like this once it has...
Khan Academy
Currency Exchange Introduction
Learners are introduced to fluctuating currency exchange rates and the role of supply and demand in this context. They understand the inverse relationship between supply and price based on these concepts and view a hypothetical scenario...
Khan Academy
American-Chinese Debt Loop
After watching the videos on foreign exchange and trade, your scholars may be wondering how exactly American debt purchasing has led to lower interest rates. Here's their answer. Sal reviews the Chinese investment cycle in US treasuries,...
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 9)
Sal uses numeric expansion to show the process of subtracting four-digit numbers. For example, he expands the number 6004 and writes it as 6000+0+0+4 and 2678 as 2000+600+70+8. When he regroups, viewers can see the actual number exchange...
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 8)
Provide your class with a developmentally sound way to view four-digit subtraction. Sal uses visual solid aids to show what each step in the subtraction process represents. Everyone will be able to see the mathematical process in action.
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 1)
A math video explores the terminology used to describe addition and subtraction using simple problems. The instructor uses visual means to describe these processes. Use it to cement understanding with both younger and older elementary...
Khan Academy
Singapore Math: Grade 3a, Unit 1 (Part 8)
Sal provides a series of numbers for viewers to consider. They must attempt to identify the number pattern and predict the following two numbers in the sequence. The video contains various problems involving place value and pattern...
Khan Academy
Singapore Math: Grade 3a, Unit 1 (Part 3)
Learners explore this key concept through a review of reading and writing numbers up to 10,000. The instructor also leads a discussion of number progression. By using visual cues and brilliant colors, Sal makes it easy to understand how...
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 2)
By working through word problems involving subtraction and using numbers in the hundreds, the instructor uses visual cues to help viewers understand how to solve the problem. The instructor's method for solving the problem involves...
Khan Academy
Singapore Math: Grade 3a, Unit 1 (Part 5)
A video on Singapore Math uses a visual approach to understanding place value. It quizzes viewers on material learned about number sense. The instructor breaks down a large number, identifying the values in the thousands, hundreds, tens,...
Khan Academy
Singapore Math: Grade 3a, Unit 1 (Part 6)
A helpful video takes a deeper look at place value by identifying numbers of greater and lesser value using a visual approach. It would be a great way to solidify concepts for those who learn visually. Using bright colors and grouping...
Khan Academy
Pi Bonds and Sp2 Hybridized Orbitals, Structure and Bonding, Organic chemistry
The sigma bonds and overlapping of s or p orbitals are the focus of an informative video. Your class will find SalÕs explanations and recaps very useful. He introduces pi bonds and draws examples of the single and double bonds.
Khan Academy
Zaitsev's Rule, Substitution and Elimination Reactions, Organic chemistry
Discuss the likelihood of ions donating electrons and then forming double bonds with an educational video. It demonstrates the methods for determining which molecules will react with others. Your class will appreciate the review.
Khan Academy
Addition of Water (Acid-Catalyzed) Mechanism, Organic Chemistry
Sal starts this lecture by presenting the question as it might appear in a test or chemistry problem set. After reviewing the naming of a molecule and then drawing it to clarify the electron arrangement, he explains how to determine the...
Khan Academy
Bromination of Benzene, Aromatic Compounds, Organic Chemistry
Starting with a diagram of a concrete example of electrophilic aromatic substitution, this video recaps diagrams of the electrophile behavior and how they "attack" relatively stable carbocations.
Khan Academy
Resonance
First, Sal compares a benzene ring to cyclohexane. He introduces the concept of resonance and uses Lewis structures to demonstrate that there is an electron cloud surrounding the entire benzene ring, rather than a "flip-flopping" between...
Khan Academy
Alcohol Properties, Alcohols, Ethers, Epoxides, Sulfides, Organic Chemistry
The properties of water, such as electronegativity, are related to its physical behavior. Water's boiling point, miscibility, and solubility are compared to those of other substances and related to van der Waals forces.
Khan Academy
Carboxylic Acid Introduction, Carboxylic Acids and Derivatives, Organic Chemistry
Sal defines the similarity of the carbonyl group on an aldehyde to that of a carboxylic acid. Next, he clarifies the presence of the extra OH group instead of the carbon chain or hydrogen. He then recaps the definitions and behaviors of...
Khan Academy
Ketone Naming, Aldehydes and Ketones, Organic chemistry
Starting with the distinctions between Ketones and Aldehydes, Sal diagrams the groups that affect the naming.
Khan Academy
Naming Benzene Derivatives Introduction, Aromatic Compounds, Organic Chemistry
Familiarize your class with the benzene derivative compounds. Some Sal will recommend memorizing, while others are mainly presented as practice for naming.
Khan Academy
Chiral Examples 2, Stereochemistry, Organic chemistry
After providing two more examples of diagramming in different ways, Sal reviews that a molecule that cannot be superimposed on its own mirror image is defined as chiral. The terms given to the chiral center carbon are provided.
Khan Academy
Amine Naming Introduction, Amines, Organic chemistry
An introduction to the structure of amines and the definition of nitrogen bonded to carbon groups. Naming amines is the primary focus and will help students recognize the compounds if they come across the important terms again.