Activity
Purple Math

Purplemath: Absolute Value Inequalities

For Students 9th - 10th
Purplemath.com offers a discussion is presented on how to solve absolute value inequalities. This lesson contains worked problems of solving absolute value inequalities and finding absolute value expressions given the solution.
Unit Plan
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Solving Inequalities and Absolute Values

For Students 9th - 10th Standards
"Dr. Math" provides an indepth explanation in solving inequalities that involve absolute value. The indepth explanation revolves around a specific problem sent in by a student. This site includes a graph of the absolute value problem.
Unknown Type
Interactive Mathematics

Interactive Mathematics: Solving Inequalities W/ Absolute Value

For Students 9th - 10th
These examples can help you solve absolute value inequalities. They show each step and are easy to follow. The last example demonstrates how to graph the solution.