Help your students understand how to use their algebraic reasoning to solve a one-step equation, where they must solve for X. Add this video to a lesson or assign it as homework.

The concept of equality can be harder to understand than it seems. Help your classes by showing a video on the concept of equal expression. Of course, equal expressions create an equation, and that is the conclusion scholars make by the...

Turning words into numbers and symbols sounds like the art of writing an algebraic expression. Young scholars first observe a lesson presentation outlining strategies for writing expressions. They then use one of the included worksheets...

Introduce your classes to order of operations with a simple example. Showing how to apply the order of operations, the lesson presenter evaluates a two-step expression. Learners see how the order of operations affects the sequence of...

If you love algebra, then you're gonna love this balancing method! Introduce young chemists to the algebraic method of balancing chemical equations using a video from an informative chemistry  playlist. The narrator works five...

After correcting the last problem in his previous video, Sal explains how to graph quadratic functions. Those with difficulty graphing algebraic functions will find Sal's instruction and easygoing manner a welcome change from staring at...

"My biggest challenge in class is to get some students to put a pen to paper, because they don't want to make a mistake." Discover how two teachers are working to help special education students develop the skills they will...

Turning words into symbols, a powerful application of mathematics. A video lesson explains how to rewrite a problem-solving question with expressions. The instructor emphasizes the need to define variables.

Demonstrate the derivation of the trigonometric area formula for a triangle. Using the base/height formula and the sine ratio, the lesson instructor demonstrates how to combine the two and create the formula A = 1/2absinC. The video...

Half at one end becomes proportional on the other. As part of a basic geometry playlist, the video introduces the Angle Bisector Theorem. The presentation uses the theorem to find missing lengths in triangles.

Demonstrate how to create an input-output table to graph a linear function with a video lesson that begins with evaluating the function for a set of values and then plotting the results. It includes opportunities for learners to practice...

This lesson is a bit more challenging, but Sal provides an excellent step-by-step explanation. He uses of different colors to help learners follow the process for solving this problem. As he solves one problem, he poses another and...

Connect algebraic reasoning with temperature conversions. Sal expresses a conversion where he uses a formula to convert degrees Celsius to degrees Fahrenheit.

Complete an algebra lesson with this video on evaluating and solving multi-step inequalities. Sal Khan completes several practice problems, explaining his process while exemplifying strong teaching skills. Each problem is different and...

Bring interest to your lesson on adding fractions with different signs by using this Khan Academy video. Sal employs a number line to explain how he adds multiple fractions with different signs. This resource could be used as an...

Sal expounds on the concept of solving and graphing one-step inequalities. He solves two practice problems along the way. If shown in conjunction with Khan's other inequality video lesson, they would make a great lesson on inequalities.

If your class has watched the Khan Academy video on recognizing divisibility, they will have a good foundation for this video on finding factors. Sal demonstrates how to find factors of a number by using the divisibility rules and...

Extending his asymptotes lesson from the previous video, Sal shows viewers another example of graphing rational functions. This video is shorter than the previous one and could be shown in a single class session.

Here is an introductory lesson to help you understand the slope of a line, whether positive or negative and the y-intercept's meaning. Several examples of changes in slope are shown on a graph, and the instructor relates them to how the...

This lecture continues reviewing linear equations and slope problems with several example problems. Those who didn't grasp the concepts during class might find this lesson helpful.

Another way to organize data beyond the stem and leaf plot - the histogram - is the focus of this lesson. Sal's objective is to introduce viewers to these methods of organization, making them familiar and straightforward, so students can...

Determine the geometric representation to the solution of a system of linear equations. The resource shows how scholars can represent a system of linear equations as a linear transformation. The video discusses using an inverse...

One way to solve a system of equations is to graph two equations and find the point of intersection. This method is demonstrated on a whiteboard to help your mathematicians understand the concept. An easy way to check your solution is...

Equate the area of a parallelogram with the magnitude. The 11th installment in a 15-video series introduces the concept of the cross product of two vectors. The presentation makes the geometric connection between the cross product, the...