Interactive
Quia

Quia: Evaluating Algebraic Expression

For Students 9th - 10th Standards
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.
Activity
Other

The mathlab.com: Practice Activities

For Students 9th - 10th Standards
This site contains activities that will help students learn concepts dealing with expressions, equations, and the coordinate plane.
Activity
Wyzant

Wyzant: Substitution

For Students 9th - 10th Standards
Students learn how substitution works and can practice problems using a substitution calculator.
Activity
Purple Math

Purplemath: Variable

For Students 9th - 10th Standards
With this Purplemath lesson, find the answer to this question with examples to show how variables are written and used.
Activity
Purple Math

Purplemath: Translating Word Problems: Key Words

For Students 9th - 10th
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....