This 3-minute video lesson introduces the concept of abolute value.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This 3-minute video lesson introduces the concept of abolute value.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This 8-minute video lesson continues to look at absolute inequalities.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This 6-minute video lesson looks at absolute value and number lines.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This art history video discussion examines Jackson Pollock's "One: Number 31", 1950, Oil and enamel paint on unprimed canvas, 1950 (MoMA).

- Subject:
- Art History
- Material Type:
- Diagram/Illustration
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Smarthistory
- Author:
- Beth Harris
- Steven Zucker

To add the vectors (x₁,y₁) and (x₂,y₂), we add the corresponding components from each vector: (x₁+x₂,y₁+y₂). Here's a concrete example: the sum of (2,4) and (1,5) is (2+1,4+5), which is (3,9). There's also a nice graphical way to add vectors, and the two ways will always result in the same vector.

- Subject:
- Algebra
- Material Type:
- Lesson
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Salman Khan

Conditions of Use:

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This arithmetic lesson gives additional practice carrying multiple digit numbers and reviews multiple of tens.

- Subject:
- Numbers and Operations
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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All art is political in the sense that all art takes place in the public arena and engages with an already existing ideology. Chinese artist, Ai Weiwei, offers an important contemporary example. The news that Chinese artist Ai Weiwei has been detained by authorities has prompted significant concern. Ai Weiwei has ben arrested by the Chinese authorities.

- Subject:
- Arts and Humanities
- Material Type:
- Diagram/Illustration
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Smarthistory
- Author:
- Beth Harris
- Steven Zucker

Conditions of Use:

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In this art history video discussion Beth Harris and Steven Zucker look at Albrecht Durer's "Self-Portrait, 1500." (Alte Pinakothek, Munich).

- Subject:
- Arts and Humanities
- Art History
- Visual Arts
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Smarthistory
- Author:
- Beth Harris Ph.D.
- Steven Zucker Ph.D.

Conditions of Use:

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This art history video examines the "Alexander Mosaic" c. 100 B.C.E., tessera mosaic from the House of the Faun, Pompeii. This Roman floor mosaic may be based on a lost Hellenistic painting by Philoxenos of Eretria, The Battle of Issus, c. 315 B.C.E.). Museo Archeologico Nazionale, Naples.

- Subject:
- Arts and Humanities
- Art History
- Visual Arts
- Material Type:
- Diagram/Illustration
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Smarthistory
- Author:
- Beth Harris
- Steven Zucker

Conditions of Use:

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This 8-minute video lesson continues to look at absolute inequalities.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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An introduction to adding, subtracting and multiplying complex numbers. [Algebra: Lesson 34 of 86]

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This 5-minute video lesson looks at adding and simplifying radicals.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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A demonstration of the use of algebra for more advanced ratio problems.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This lesson introduces the use of algebra for solving age word problems.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This lesson continues the explanation for the use of algebra to solve age word problems.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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A demonstration of using algebra to solve age word problems.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This 4-minute video lesson continues to demonstrate how to solve radical equations.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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A demonstration of how to divide one polynomial into another polynomial.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This demonstration presents an alternate solution to the advanced ration problem for algebra in the previous lesson.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This algebra lesson is an introduction to functions.

- Subject:
- Algebra
- Functions
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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How to use algebra to find the full price when the discount price is known.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This 5-minute video lesson looks at applying radical equations.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This 7-minute video lesson looks at applying radical equations.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This 3-minute video lesson looks at applying radical equations.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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An introdution to averages and algebra problems involving averages.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This lesson discusses multiplying algebraic expressions.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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A demonstration of calculating i, raised to arbitrarily high exponents. [Algebra: Lesson 32 of 86]

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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A demonstration of calculating i, raised to arbitrarily high exponents.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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How to calculate the foci, or focuces, of an ellipse. [Algebra: Lesson 60 of 86]

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This lesson explains how to solve a quadratic by completing the square.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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An introduction to adding, subtracting and multiplying complex numbers.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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A demonstration of dividing complex numbers and complex conjugates.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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Additional practice identifying and graphing conic sections.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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A continuation of the lesson on hyperbolas and conic sections.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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Additional explanation of hyperbolas and the conic section.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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An introduction to the circle.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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An introduction to the ellipse.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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An introduction to the hyperbola and conic sections.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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This algebra lesson explains the connection between even and odd numbers and functions.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman

Conditions of Use:

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An introduction to understanding direct and inverse variation.

- Subject:
- Algebra
- Material Type:
- Lecture
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Khan, Salman