This video focuses on rational expressions and completes Sal's lecture series on working with and solving this particular type of equation. Its length would be ideal for a computer lab visit or homework assignment (in conjunction with a...

Here is an equation in which the first step is to use the distributive property to remove the parenthesis. Then, it is solved for the variables. Since variables are on both sides of the equation, it is important to verify the answer by...

Continue your lecture on radical equations with this video, which features Sal solving a few more problems with his classic clarity and understandable way. Young mathematicians will benefit immensely from seeing his cool hand guide the...

Here is a fairly basic video that uses three equations, each written in slope-intercept form, to determine whether the lines are parallel. Sal graphs each equation on the same coordinate plane to show how their slopes compare. The video...

Help learners recognize the characteristics of a quadratic graph and how changes affect them. An informative video uses a graphing calculator in order to find out what happens when the leading coefficient of a quadratic...

Mix a great resource in to your engineering repertoire. An engaging video discusses diffusion and mass transfer. It explains how a difference in concentration is the driving force for this mechanism. 

Add a little sizzle to your lesson. The 15th video in the Crash Course Engineering playlist looks at heat exchangers, including concentric tubes, finned tubes, plate heat exchangers, and shell-and-tube heat exchangers. It describes how...

Starting with a set of values for the x and y variables, this video shows how to tell whether these points determine a linear or non-linear function. Sal first defines linear functions in terms of the change in y over the change in x,...

Useful as a classroom resource, a computer lab assignment, or even a homework supplement, this video shows viewers some more techniques for factoring polynomials. Once they have mastered the art of factoring, the rest of algebra will...

Kids love animals, so encourage them to explore matches with animal-themed math. Jennifer and Rich present the app's features, spending particular time on how to use it and apply it to your classroom needs.

You see computers all the time, but do you really know how a computer works? The first installment of a five-part playlist explains the essential functions of a computer. The video describes, in detail, each of the functions: input,...

The instructor uses the temperature formula to illustrate how the variables can be manipulated to solve a problem.

Record-setting cars need specially made tires. Young engineers watch a video in the Real Engineering series to learn about designing tires. Along the way, they study acceleration, inertia, and angular velocity.

Converting percents to decimals, and the other way around, can be tricky. Sal shows young mathematicians how to simplify this process with two sample equations and one word problem.

Use division and factoring to determine the leading one coefficient. This presentation thoroughly explains how to factor a trinomial to determine its common factors.