Lesson 5: Evaluating Expressions
A Cheat Sheet is an all-in-one, single-page graphic organizer covering the big topics in the Algebra 1 curriculum. Each Cheat Sheet includes important vocabulary, key concepts, and guided examples. There is a set of practice problems included with each sheet that provides leveled and skill-based practice. Included in the download is a PDF and editable WORD version of the Cheat Sheet and Practice Problems, along with a full answer key.
This lesson works on processing the evaluating of algebraic expressions. Students learn the meaning and the use of the terms “substitution” and “evaluate” to use when working with expressions. A connection is made to geometry to review the use of substitution as a method for using formulas. The final portion of the Cheat Sheet focuses on translating word problems into expressions that can be solved for a variable. Each of the first two sections on the Cheat Sheet provide students with the prerequisite skills needed to solve word problems, which is the focus of the third section on the sheet. The ultimate goal of this lesson is to help students see how to translate from words to expressions and then solve for a variable. The Practice Problems mimic the Cheat Sheet, beginning with basic substitution problems, then advancing to using formulas and setting up expressions for real-world applications, and ending with a higher-order activity in which students must analyze worked-out expressions to locate and correct errors.