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Lesson Plan

Fraction Simplest Form by Greatest Common Factor

When fractions have big numerators and denominators, it can be tough to find the simplest form. Fear not! Use this lesson plan to teach your students to find the simplest form using the greatest common factor.
Grade:
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Learning Objectives

Students will be able to simplify fractions using the greatest common factor between numerators and denominators.

Introduction

(5 minutes)
  • Write the following fraction on the board: 2436/3325
  • Ask your students to turn and tell their neighbor a strategy to reduce the fraction to its "simplest form," but don’t clarify the term yet!
  • Allow students to share their ideas with the whole class or with a partner. Note related academic terminology for future reference.
  • Reveal that today’s lesson is about simplifying fractions with larger numerator and denominators by using their greatest common factor. Explain that simplest form is when a fraction’s numerator and denominator can no longer be divided evenly by a common factor.