The most helpful part of this video is at the very end, when Sal demonstrates how to solve a combinations problem incorrectly (after initially finding the correct answer). The trial-and-error strategy of solving multiple-choice math questions is an important skill for students to learn. It is also useful to see Sal work through the problem more than once with two different possible answers.

Concepts

equations, exponents, quadratic equations, slope

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Additional Tags

algebraic equations, exponents, quadratics, slopes, math

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Classroom Considerations

• This video is hosted on YouTube