What is unit rate? How is a ratio converted to unit rate? Really, it's just about getting the denominator of a ratio to be 1. When the denominator is 1, the ratio is a unit rate. Check out this video as the instructor illustrates a few...

Add a new method of converting units to your repertoire! A video lesson describes how to use a graph to convert units. The lesson focuses on miles-to-kilometers and kilometers-to-miles conversions but applies to any type of conversion.

Here's a real-world word problem. It involves walking for a certain amount of time. There are some given values to use. So take the given values, set up the ratio and then convert that to a unit rate value. Now use this unit rate to get...

Helping students realize the common missteps in solving the average SAT problem, Sal creates a lens through which students can clearly see the correct and incorrect approach to each type of problem. He points out what a student might...

If one meter is 100 centimeters, how many square centimeters is equal to one square meter? Hint: the answer isn't 100! How many pupils make this mistake? A video lesson calculates the conversion factor of the common metric area units....

This video examines a simple rate problem. The listener must compute whether four trains traveling different distances over different amounts of time are moving at the same constant rate. This problem reinforces one's basic understanding...