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Instructional Video4:44
Curated Video

Identify Extraneous Solutions

3rd - Higher Ed
“Identify Extraneous Solutions” will review the different methods of how to test equations for extraneous solutions.
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Instructional Video5:40
Curated OER

What's the Power of a Power Rule?

8th - 9th
Follow along and learn a slick trick to help you solve problems involving an exponent raised to another exponent. You'll use the power of a power rule and simplification to solve the problem. This is a clear tutorial that does a good job...
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Instructional Video15:51
2
2
Flipped Math

Multiply and Divide Rational Expressions

9th - 12th Standards
It doesn't need to be complex. The second of five installments in the Algebra II - Rational Expressions unit focuses on multiplying and dividing rational expressions. Scholars learn how to perform these operations as well as how to...
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Instructional Video20:31
2
2
Flipped Math

Solve Rational Equations

9th - 12th Standards
It's entirely rational to solve rational equations. Pupils watch a video to learn about solving rational equations in the fourth of five episodes in the Algebra II - Rational Expressions unit. They consider two different methods:...
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Instructional Video22:54
2
2
Flipped Math

Exponential Modeling

9th - 12th Standards
Earn some knowledge about mathematical models for financial situations. The fourth of five parts in the Algebra II - Exponential Functions unit focuses on modeling real-world scenarios with exponential functions. Young mathematicians...
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Instructional Video20:48
2
2
Flipped Math

Introduction to Logarithms

9th - 12th Standards
Keep on rolling with a lesson on logarithms. A video presentation introduces the definition of logarithms, the properties of them, and then how to use logarithms to solve simple exponential equations. The lesson is a first in a series of...
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Instructional Video26:00
2
2
Flipped Math

Compound Probability and Independence

9th - 12th Standards
Here's a way to learn about compound events and independence on one's own. The second of four lessons in the Algebra II - Intro to Probability unit focuses on compound events and probability. Pupils watch a video to calculate the...
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Instructional Video3:07
Krista King Math

Commutative Property

9th - 12th Standards
Connect the commutative property to commuting. The quick video shows how to use the commutative property to write sums and products in a different way. It provides examples to show that the property only works for addition and...
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Instructional Video4:46
Curated OER

Factoring Sum of Cubes

9th - 11th
Here is a special form of a sum of cubes problem, where students use algebraic multiplication to rewrite each term in expanded form. Sal gives an example prior to solving the problem in order to show the process that he will use to...
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Instructional Video6:04
Khan Academy

Solving Equations with the Distributive Property

7th - 11th
Here is an equation in which the first step is to use the distributive property to get rid of the parenthesis. Then it is solved for the variables. Since there are variables on both sides of the equation, it is important to verify the...
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Instructional Video18:28
Curated OER

Focus and Directrix of a Parabola 2

10th - 12th
Continuing from a previous video, Sal takes the discussion of the focus and directrix of parabola further. Given the parabola, y=x2, he derives the focus and directrix by matching parts of the equation he found earlier. He then, comes up...
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Instructional Video14:31
Curated OER

Parabola Focus and Directrix 1

10th - 12th
Starting with a point (focus) and a line below the point (directrix), in this video, Sal tries to find the set of all points (locus) equidistant to the point and the line. He shows, using the distance formula, that indeed, we have an...
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Instructional Video11:59
Curated OER

Binomial Theorem (Part 3)

10th - 12th
In this video on the Binomial Theorem, Sal tries to give an intuition behind why combinations are part of its definition. By looking at the expansion of (a + b)3 and carefully looking at where each value originates from, one can see how...
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Instructional Video10:04
Curated OER

Compound Interest and e (Part 3)

10th - 12th
Continuing with the lesson on compound interest, in this video, Sal derives the general formula for any amount of principle, interest rate, and compounding periods over one year.
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Instructional Video10:14
Curated OER

Compound Interest and e (Part 2)

10th - 12th
Sal continues to look at changing the length of compounding time, from daily to hourly compounding interest. Now he is able to show that compounding 100% annual interest converges on the number 2.71É or e as the number of compounding...
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Instructional Video7:30
Curated OER

Conic Sections: Hyperbolas 2

10th - 12th
Here is an example in this video of graphing a hyperbola centered at the origin. First, Sal shows solving for the equations of the asymptotes and then shows how to determine the direction of the hyperbola. He takes the approach of not...
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Instructional Video10:29
Curated OER

Conic Sections: Hyperbolas 3

10th - 12th
Continuing with the study of graphing hyperbolas, Sal shows an example of graphing a parabola that is centered at a point off the origin. By looking at the equation, first without shifting it, he helps listeners develop an intuitive...
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Instructional Video13:34
Curated OER

Conic Sections: Intro to Hyperbolas

10th - 12th
In this video, Sal starts with the equation of a hyperbola by first comparing it to the equation of the circle, and ellipse. He then shows how to find the equation of the asymptotes by solving for y. He also shows a few intuitive ways to...

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