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## Evaluate an expression by substituting non-negative rational number values for letter variables in the expression. 0506.3.1

### Links verified on 9/15/2014

1. Algebraic Expressions - explanation, examples, and several practice problems 2. Beginning Algebra Tutorial 4: Introduction to Variable Expressions and Equations - introduction, tutorial, lots of examples followed by practice problems
3. Evaluate a Formula Using Substitution - [1:15] short video lesson 4. Evaluate Expressions - Substitute values for variables in algebraic expressions and evaluate the expressions
5. Evaluating Algebraic Expressions - explanation and a practice problem, with an answer [This expired link is available through the Wayback Machine Internet Archive. If the page doesn't load quickly click on Impatient? at the bottom right of the page.]
6. Evaluating Algebraic Expressions - Evaluating algebraic expressions can be a simple process, but needs to follow an order of operations to get the right answer.
7. Evaluating an Expression with One Variable - explanation, practice and a game 8. Evaluating Expressions with Two Variables - explanation, practice and a game 9. Evaluating an Expression with Two Variables - [advanced] [3:58] video lesson at Algebra level 10. Evaluation: Evaluating Expressions, Polynomials, and Functions - two-page lesson from Purple Math
11. Evaluating Expressions - explanation, examples and a workout 12. Expression Evaluation Calculator - Enter your expression and click on Evaluate. 13. Expression Evaluation; Introduction to Expressions - first page of a multi page lesson with many examples and images site for teachers | PowerPoint show | Acrobat document | Word document | whiteboard resource | sound | video format | interactive lesson | a quiz | lesson plan | to print Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles. 