Quia
Quia: Evaluating Algebraic Expression
This interactive game is similar to Concentration. Students must evaluate the expression in the puzzle for the given value and match it with the correct answer.
Other
The mathlab.com: Practice Activities
This site contains activities that will help students learn concepts dealing with expressions, equations, and the coordinate plane.
Wyzant
Wyzant: Substitution
Students learn how substitution works and can practice problems using a substitution calculator.
Purple Math
Purplemath: Variable
With this Purplemath lesson, find the answer to this question with examples to show how variables are written and used.
Purple Math
Purplemath: Translating Word Problems: Key Words
Use this lesson to get a clear explanation of how to translate word problems into mathematical equations. Included is a table for common phrases and their mathematical symbols. Use the examples as guides for working on your own problems....