David explains how to determine the torque exerted by a non-perpendicular force. Created by David SantoPietro.
Figuring out the formula for fixed mortgage payments using the sum of a geometric series. Created by Sal Khan.
These lesson plans delve deep into the pivotal event of the 1878 Fireburn, a very significant labor uprising in the Virgin Islands, rooted in struggles for human and labor rights. The Fireburn remains a testament in Virign Islands history of the courage of estate laborers such as Mary Thomas, Axeline Salomon, Mathilde McBean, and Susanna Abramson. The students will be taken through the socio-political landscape of the former Danish West Indies through interactive activities, multimedia resources, and critical discussions that understand the events leading up to the uprising and its profound aftermath. This module is to be designed with the purpose of educating but, at the same time, encouraging pride and recognition from those who sacrificed so much by standing up against their own oppression and daring to imagine a more equitable life,, giving way to the current freedoms that exist today in the Virgin Islands of the United States.
How the indigenous Australians used fire to change their environment. Created by Sal Khan.
How the indigenous Australians used fire to change their environment. Created by Sal Khan.
A deep dive into the First Amendment, which guarantees US citizens freedom of religion, speech, press, and assembly. In this video, Kim discusses the First Amendment with scholars Erwin Chemerinsky and Michael McConnell.
Fear of factionalism and political parties was deeply rooted in Anglo-American political culture before the American Revolution. Leaders such as George Washington and Thomas Jefferson hoped their new government, founded on the Constitution, would be motivated instead by a common intent, a unity. But political parties did form in the United States, with their beginnings in Washington's cabinet.
Energy cannot be created or destroyed. It can only be transferred or converted from one form to another.
Overview of the first law of thermodynamics.
Worked example of the first law of thermodynamics.
First living things on land clarification (This video copyrighted under Create Commons Attribution and Share-Alike CC-BY-SA license). Created by Sal Khan.
The first term in a Fourier series is the average value (DC value) of the function being approximated. Created by Sal Khan.
In previous lessons we've learned how expansionary monetary policy and expansionary fiscal policy can be used to mitigate a recession, but they don't have to be used in isolation from each other. Often there is simultaneous use of fiscal and monetary policy. Learn what happens when they are used at the same time in this video.
Fiscal policy can be used to close output gaps. Fiscal policy means using either taxes or government spending to stabilize the economy. Expansionary fiscal policy can close recessionary gaps (using either decreased taxes or increased spending) and contractionary fiscal policy can close inflationary gaps (using either increased taxes or decreased spending).
This online lesson provides perspectives from Native American community members and their supporters, images, news footage, an interactive timeline, and other sources about an important campaign to secure the treaty rights and sovereignty of Native Nations of the Pacific Northwest. Scroll to begin an exploration of the actions Native Nations took to address injustices.
Almost as soon as the Arab armies of Islam conquered new lands, they began erecting mosques and palaces and commissioning other works of art as expressions of their faith and culture. Many aspects of religious practice in Islam also emerged and were codified. The religious practice of Islam, which literally means "to submit to God", is based on tenets that are known as the Five Pillars, arkan, to which all members of the Islamic community, Umma, should adhere.
Explore how to think about average fixed, variable, and marginal costs, and how to calculate them, using a firm's production function and costs in this video. Created by Sal Khan.
Floating Exchange Effect on China. Created by Sal Khan.
Floating Exchange Effect on US. Created by Sal Khan.
Floating Exchange Resolving Trade Imbalance. Created by Sal Khan.