SAT Math Lesson Plan 18: Rational Expressions and Equations

In this SAT Math lesson, students explore the essential topic of rational expressions and equations—a foundational skill in both the Heart of Algebra and Passport to Advanced Math categories on the SAT. Through scaffolded instruction and guided practice, students learn how to simplify rational expressions by factoring, identify domain restrictions, and solve rational equations, including those that model real-world applications such as rate and work problems.

This 45-minute lesson includes warm-up activities, a detailed Teach section with multiple examples, a Review with additional practice problems, and a 10-question multiple choice quiz with an answer key. Special attention is given to recognizing and avoiding extraneous solutions and interpreting expressions within context. This is Lesson 18 in a comprehensive 35-lesson SAT Math prep series designed to build mastery and confidence.

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