The instructor uses an electronic chalkboard to demonstrate how to solve a multi-step equation with variables on both side of the equation. One example is modeled using a step by step approach to solve for x. (02:01)

In math, the absolute value of a number is its distance from zero. Solve absolute value equations with tips from a math teacher in this video on solving math problems.

This 14 minute video answers the following questions:
What does it mean to solve an equation? How do you solve equations? How to write an equation. It uses a white board or narrator.

What is wrong in this equation? Can you solve it? This video shows work done to solve a problem. It shows how a wrong answer is derived and the students who are viewing need to figure out what was done incorrectly. A nice sponge activity. The video i...s set to music while a picture is shown of a hand working out the equation on a piece of paper. (03:39)[more]

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

In this video segment from Cyberchase, Inez and Digit are attempting to gain access to a machine in order to save Sensible Flats from disaster. First, they must balance a scale to get the correct numeric access code. In order to do that they have to ...balance a scale using four weights on each side. They soon learn that adding or removing the same weight from each side does not upset the balance of the scale. (3:15)[more]

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

In this video segment from Cyberchase, the CyberSquad must figure out the correct number code to unlock a machine. They have two numbers on one side, but are missing one of the numbers on the other side. The sum of the numbers must be equal on each s...ide, so by subtracting the same number from each side they are able to determine the missing number. (1:33)[more]

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