Learn about DNA (deoxyribonucleic acid). Overview of DNA bases, complementary base pairing, and the structure of the double helix.
Introduction to DNA cloning.
How DNA is copied (replication). How information in DNA can be used to make a protein.
Now we add a damper to our spring.
Data on Chinese M1 Increase in 2010. Created by Sal Khan.
Learn about the balance of payments (BOP) by taking a look at the BOP for the United States in 2006 and how it relates to China's currency. Created by Sal Khan.
Data on Chinese Foreign Assets Increase in 2010. Created by Sal Khan.
Example questions analyzing data to justify claims in experiments.
Deaths in World War I
Positive and negative effects of China's devaluing of their currency. Created by Sal Khan.
In this video, learn about the distinction between deficits and debts, as well as the pros and cons of deficits.
Sal discusses the conditions of matrix dimensions for which addition or multiplication are defined. Created by Sal Khan.
Explore the basics of deflation, including the definition of deflation, how the CPI changes when there is deflation, and why economists tend to be concerned when deflation occurs. Created by Sal Khan.
One of the biggest worries associated with deflation is a deflationary spiral, in which low unemployment and a decreasing price level leads to lower unemployment and an even lower price level. Created by Sal Khan.
How you can have deflation even if the money supply increases. Created by Sal Khan.
Dehydration synthesis (condensation reaction) between sugar molecules. Monosaccharides, disaccharides, and polysaccharides. Formation of maltose from glucose monomers.
To get a better intuition about how much a consumer values a good in a market, we think of demand as a marginal benefit curve. In this video we look at the demand curve from a marginal benefit framework. Created by Sal Khan.
Why do people hold wealth in the form of money, rather than in some other interest-earning asset? Learn about the demand for money in this video.
A real-world example of the concepts behind the AD-AS model is the inflation that the United States experienced in the late 1960s. In this video, we break down some of the events going on at the time and use the AD-AS model to see if our predictions using this model match what really happened. Created by Sal Khan.
A close reading of the beginnings of the Declaration of Independence to identify ideas of natural rights, social contract, limited government and popular sovereignty in the text.