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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/constructing-linear-models-real-world/v/constructing-linear-functions-2

Uploaded 06-08-15

Linear model for painting

Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subj...

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Uploaded 01-09-20

Civil society is a public space between the state, the market, and the ordinary household, in which people can debate and take action.

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Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, an...

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-kindergarten-math/cc-kindergarten-add-subtract/kindergarten-add-sub-intro/v/subtraction-introduction

Uploaded 01-06-15

Learn what it means to subtract. The examples used in this video are 4-3 and 5-2.
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Uploaded 06-08-15

Linear model for book reading

Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subj...

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratic-functions-equations/x2f8bb11595b61c86:untitled-1082/v/simple-quadratic-equation

Uploaded 12-07-11

Simple Quadratic Equation

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-kindergarten-math/cc-kindergarten-add-subtract/kindergarten-make-10/v/making-5

Uploaded 01-06-15

Learn how to add numbers to make 5.
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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/cc-6th-box-whisker-plots/v/constructing-a-box-and-whisker-plot

Uploaded 26-05-15

Here's a word problem that's perfectly suited for a box and whiskers plot to help analyze data. Let's construct one together, shall we?

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Uploaded 01-09-20

What's the difference between civic life and private life? What's the difference between politics and government?

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Uploaded 06-08-15

Marbles and water in tank

Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subj...

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-kindergarten-math/cc-kindergarten-add-subtract/kindergarten-making-5-9/v/adding-to-10-example

Uploaded 01-06-15

Learn that if we have 3 bananas, then we need 7 more bananas to make 10 bananas.
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Uploaded 12-07-11

Dividing Complex Numbers

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Uploaded 06-08-15

Sal find the formula of a function that, given an input value "b," outputs a value "a" that satisfies the equation 4a+7b=-52.

Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over agai...

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-2nd-grade-math/cc-2nd-add-subtract-100/cc-2nd-add-100/v/understanding-place-value-when-adding-ones

Uploaded 01-06-15

Learn how to add 37 + 2 by thinking about place value.
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M...

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Uploaded 01-09-20

A person has citizenship as a member of a state, which confers on them rights, responsibilities, and privileges. An individual practices good citizenship by being an informed and active member of a political community.

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-2nd-grade-math/cc-2nd-add-subtract-1000/cc-2nd-sub-ones-tens-hundreds/v/subtracting-hundreds-and-tens

Uploaded 01-06-15

Learn how to subtract 1, 10, or 100 from a number.
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M...

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:functions/x2f8bb11595b61c86:determining-the-domain-of-a-function/v/domain-of-a-modeling-function-example-1

Uploaded 06-08-15

Sal determines the domain of a function that models the height of a plant over time.

Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to expr...

u16_l5_t1_we2 Completing Perfect Square Trinomials
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Uploaded 12-07-11

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-2nd-grade-math/cc-2nd-add-subtract-100/cc-2nd-add-sub-100-word-problems/v/fence-posts-for-horses

Uploaded 01-06-15

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Simplify (4x^2y - 3x^2 - 2y) + (8xy - 3x^2 + 2x^2y + 4)

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Algebra I on...

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Uploaded 27-08-20

I'm going to teach a sample lesson to show you how to:

-Reduce lecture time during live sessions
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Khan Academy is a nonprofit organization. Our...

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-2nd-grade-math/x3184e0ec:geometry/cc-2nd-shapes/v/recognizing-shapes

Uploaded 01-06-15

Learn how to identify circles, triangles, squares, rectangles, rhombuses, and trapezoids.
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Learn how rates and how they're related to ratios.

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...

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Uploaded 12-07-11

Quadratic Equations in Standard Form

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-measurement-geometry/cc-1st-fractions-of-shapes/v/halves-and-fourths

Uploaded 01-06-15

Learn how to divide shapes into two or four equal sections.
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<...

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Uploaded 12-12-18

The law of demand states that quantity demanded increases when price decreases, but why? Two reasons why the demand curve slopes downward are the substitution effect and the income effect. Learn about both in this video.
AP(R) Microeconomics on Khan Academy: Microeconomics is the study of individual decisionmakers in an economy, such as people, households, and firms. Learn how markets work, how incentives drive decisionmaking, an...

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Uploaded 26-08-20

Distillation is the process of separating the components of a liquid mixture through selective evaporation and condensation. The basis of separation is the difference in the vapor pressures (volatilities) of the respective components. To improve the separation in a distillation, chemists often use a fractionating column, which allows for multiple cycles of evaporation and condensation (this is known as...

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-2nd-grade-math/cc-2nd-measurement-data/cc-2nd-compare-estimate-length/v/estimating-lengths

Uploaded 01-06-15

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:absolute-value-piecewise-functions/x2f8bb11595b61c86:piecewise-functions/v/evaluating-piecewise-functions-example

Uploaded 28-05-15

Sal evaluates a piecewise function at a given input.

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Applying the Quadratic Formula

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Algebra I on Khan Academy...

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Uploaded 28-05-15

Sal determines the domain of a function that models the price of candy bars.

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Uploaded 27-05-15

Sal gives many examples where he determines the domains of functions according to mathematical limitations.

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https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:solubility/e/solubility

Uploaded 26-08-20

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Substances with similar polarities tend to be soluble in one another ("like dissolves like"). Nonpolar substances are generally more soluble in nonpolar solvents, while polar and...

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Uploaded 27-05-15

Sal introduces the concept of "domain" of a function and gives various examples for functions and their domains.

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Uploaded 26-05-15

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Completing the Square to Solve Quadratic Equations

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Uploaded 26-05-15

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:trig/x2ec2f6f830c9fb89:period/v/example-amplitude-and-period-transformations

Uploaded 26-05-15

Understanding how the amplitude and period changes as coefficients change.

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https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:intermolecular-forces-and-properties/x2eef969c74e0d802:kinetic-molecular-theory/v/kinetic-molecular-theory-and-the-gas-laws

Uploaded 21-08-20

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The kinetic molecular theory (KMT) describes the behavior of ideal gases at the particle level. The five main postulates of the KMT are as follows: (1) the particles in a...

Uploaded 26-05-15

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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/dot-plot/v/ways-to-represent-data

Uploaded 26-05-15

Here are a few of the many ways to look at data. Which is your favorite?

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