Positive and negative effects of China's devaluing of their currency. Created by Sal Khan.

Learn how to debug in your webpages on Khan Academy using console.log() and the Chrome Developer Tools.

"We hold these truths to be self-evident, that all men are created equal . . . " In this video, Kim explores the origins of the Declaration of Independence in the ideas of Enlightenment philosopher John Locke and its resounding message in history.

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.

A' and 'an' are the indefinite articles of English; 'the' is the definite article. David explains what that means!

David defines the terms amplitude and period for simple harmonic motion and shows how to find them on a graph. Created by David SantoPietro.

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.

Learn how the Preamble to the US Constitution reflects the democratic ideals of the Framers.

Ideas of natural rights, social contract, popular sovereignty, limited government and republicanism and their influence on the foundation of the United States of America.

An independent clause is a sentence that has a subject and a verb and requires no extra information to understand. Dependent clauses, which start with subordinating conjunctions such as "while," "that," or "unless," give background information but cannot stand on their own as sentences.