Using a problem involving the perimeter of a rectangle, Sal Khan demonstrates how to solve for a variable (the width of the perimeter). Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of th...e 2009 Microsoft Tech Award in Education. (06:58) There is a lot of information on the screen--the viewer may want to open the video to 'full screen.'[more]

In this video, Sal Khan demonstrates how to solve 20-7x=6x-6. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. (04:06) There is a lot of infor...mation on the screen--the viewer may want to open the video to 'full screen.'[more]

This lesson will teach how to solve any multiple steps Linear Equations using distributive properties and the operations concepts. And the same time you learn how to solve formulas which are an application of multiple steps linear equations.
Durati...on:30:18[more]

From pbslearningmedia.org, produced by Thirteen/WNET New York

In this video segment from Cyberchase, Jackie, Matt, and Inez try to move a stack of slabs blocking a doorway. They decide to use a long board as a lever, but they soon realize they need a longer board in order to move the heavy slabs. The problem is... that they are not sure exactly how long the lever should be. Since they do not have the time to try out levers of varying lengths, Inez decides to construct a scale model. While testing their model levers, they learn about the relationship between the length of a lever and its lifting capability. (4mins)[more]

The presenter in this video explains how to solve multi-step equations using an example problem in which she explicitly shows every step involved. (02:21)

In this video, the presenter explains how to solve an equation with one variable as well as a fraction. This is an advanced problem for solving equations with a single variable. (01:49)

The presenter in this clip, explains basic linear equations; what they are and how to solve them. He works through a couple of simple examples. This would be a good video for students to watch independently for extra reinforcement. (02:49)

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