Solving a Rational Equation Lesson Plan

Instructor: Kerry Gray

Kerry has been a teacher and an administrator for more than twenty years. She has a Master of Education degree.

This lesson will help your students learn how to solve rational equations. Students will watch a video lesson, measure their understanding with a short quiz, and collaborate with others to solve rational equations.

Learning Objectives

After this lesson, students will be able to:

  • define and provide examples of rational equations
  • describe the steps to solve a rational equation
  • solve rational equations

Length

This lesson will take 45-90 minutes.

Curriculum Standards

CCSS.MATH.CONTENT.HSA.SSE.A.1.A

Interpret parts of an expression, such as terms, factors, and coefficients.

CCSS.MATH.CONTENT.HSA.CED.A.1

Create equations and inequalities in one variable and use them to solve problems.

CCSS.MATH.CONTENT.HSA.REI.A.1

Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct a viable argument to justify a solution method.

Materials Needed

  • Chart paper

Vocabulary

  • rational equation
  • numerator
  • denominator
  • extraneous solution
  • coefficient
  • variable

Instructions

Activate prior knowledge by displaying the following:

3x = -15/9

Have students turn and talk with a partner about how to label the numerator, denominator, variable, and coefficient in this equation. Then have pairs work together to solve the equation. Give student pairs the opportunity to share their answers with the class. Review correct and incorrect answers together.

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