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It's time for them to show you what they've learned! The review provides a sampling of the different concepts learned throughout the eight-part series. Learners solve equations by combining like terms, applying the distributive property,...

In this video, Sal solves a word problem sent in by a listener that has two cyclists riding towards each other over a given amount of time. It is an interesting problem regarding ratios and the relationship between distance, rate, and...

Turning absolute value inequalities into compound inequalities and graphing them is an algorithmic skill that many young algebrists memorize instead of working to understand. This presentation really emphasizes the how's and why's of...

These are the types of problems that cause many people to distress over algebra. In this video, Sal looks at a problem where three people, each at set distances apart, are traveling at different constant speeds. We need to know how long...

Here is a challenging motion problem about two different length trains and how long it takes them to pass each other going in the same direction and opposite directions. At first glance, there doesnÕt seem to be enough information given...

This inequality word problem would make a good warm-up activity for a class studying single variable inequalities. This video creates and solves an inequality based on a short word problem about unit cost.

Sal takes your class’ newfound (or growing) knowledge of graphs of lines to the next level. He presents a few word problems in which mathematicians need to understand how to use linear function graphs.

Mix it up in math class! The video provides an equation hint to be able to setup mixture problems. Two problems are provided as examples on how to use the equation in order to solve mixture type word problems. 

Linear equations, coordinate planes, and systems of equations are covered in this extremely well-organized lesson plan. Composed of a series of mini-lessons, the instruction aims at explaining a different facet of solving systems of...

Sales tax always increases the price of your purchases. How can you figure out how much you'll be paying in full? Teach your class how to figure our their total cost, including sales tax, with this video. Using an example of a pair of...