Khan Academy
Khan Academy: Algebra: Solving Quadratic Equations by Factoring
An exercise on solving a quadratic equation by applying the method of factoring by grouping. Begin by clicking on "show scratchpad."
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Khan Academy: Art History: Ancient Art and Civilizations: Ziggurat of Ur
History of the Ziggurat of Ur, c. 2100 BC Located in Tell el-Mukayyar, Iraq. Includes links to additional information.
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Khan Academy: Art History: Paleolithic Origins
Article and video discussing various forms of art from the Paleolithic period, particularly cave art. [5:48] With links to additional information.
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Khan Academy: Coordinate Plane: Plot Ordered Pairs
Khan Academy: Coordinate plane: plot ordered pairs practices plotting an ordered pair on the x (horizontal) axis and y (vertical) axis of the coordinate plane.
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Khan Academy: Watergate
Analyze the scandal that brought down the Nixon presidency and added to the loss of confidence our nation had in our government. Included on this site is a concise summary, references for further study, questions for analysis, and a...
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Khan Academy: Stagflation and the Oil Crisis
Read this concise yet comprehensive summary of the challenges the economy faced during the 1970's. Included is an overview of the subject matter, references for further reading, questions for analysis, and a question/answer section from...
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Khan Academy: The Presidency of Jimmy Carter
How does history view the presidency of Jimmy Carter? Learn about the problems Carter faced during his administration through a well organized summary complete with questions for analysis, references for further study, and a...
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Khan Academy: The Presidency of Ronald Reagan
President Reagan was known as the "Great Communicator". Examine why he was elected President by a landslide and his policies during his two terms. This source contains an overview of information, references for further study, questions...
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Khan Academy: The Presidency of Ronald Reagan, Pt. 2: Foreign Policy
Under President Reagan, the Cold War began to thaw and trouble brewed in the Middle East. Learn about Reagan's foreign policy initiatives by perusing this summary, reading an excerpt from his "Evil Empire" speech, answering thought...
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Khan Academy: The Iran Contra Affair
Ronald Reagan earned the nickname the "Teflon President" since scandals never reduced his popularity. The Iran-Contra Affair was one such scandal that plagued his second term. This source offers an explanation of the scandal, references...
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Khan Academy: Emergence of the Aids Crisis
How did Americans and the government respond to the emergence of AIDS in the 1980's? Understand our reaction by reading the following summary, answering questions for analysis, checking the reference list for further reading, and...
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Khan Academy: The Gulf War
The United States led a UN coalition to free Kuwait from Iraq in 1991. Learn about events leading up to the war and the far-reaching consequences of this action. Included is a summary, questions for analysis, references for further...
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Khan Academy: The Presidency of Bill Clinton
The presidency of Bil Clinton was marked by great success and also a scandal leading to impeachment. Understand the logistics of his presidency by reading the following summary, answering critical thinking questions, using the...
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Khan Academy: Globalization
Is globalization positive or negative for the United States? To answer this question, visit the following source which includes a summary of pros and cons, references for further reading, critical thinking questions, and a...
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Khan Academy: The Election of 2000
The 2000 presidential election was the closest in Electoral College history and the first to be decided by the Supreme Court. This source explains what happened on election night and the following month. Included are references for...
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Khan Academy: The Presidency of George W. Bush
September 11, 2001 occurred in the early days of George W. Bush's administration and set the tone for his presidency. Study his domestic and foreign policy by reading the following summary, answering critical thinking questions, and...
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Khan Academy: September 11th
The Global War on Terror began with the terror attacks on American soil on September 11. Read about what led up to the attacks, how our country responded, and the fallout from our fight against terrorism. Included is a summary,...
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Khan Academy: The Great Recession
In 2008, America faced the worst economic crisis since the Great Depression. Examine how we got to this point and how the government worked to end it the crisis. Examine the following resource that contains a summary, graphs,...
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Khan Academy: Barack Obama as President
Analyze the historic presidency of Barack Obama. Study his economic and foreign policy using the following summary, bibliography, questions for critical thinking, and a question/answer section from the community.
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Khan Academy: What Is Displacement?
Learn the definitions of position, displacement, distance, and distance traveled and view examples of each.
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Khan Academy: What Are Position vs. Time Graphs?
What can you learn from graphs that relate position and time and how are they useful? Article relates what the verticle axis, slope, and curvature represents on a position graph and provides examples.
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Khan Academy: What Is Acceleration?
Provides definitions, examples, and formulas for acceleration.
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Khan Academy: What Are Velocity vs. Time Graphs?
Graphs and examples help explain what the vertical axis, slope, and area represent on a velocity-time graph.
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Khan Academy: What Are Acceleration vs. Time Graphs?
What can you learn from graphs that relate acceleration and time? This tutorial takes a look at the vertical axis, slope, and area on a graph and provides examples.