Lesson Plan: Simplifying Fractions Using Common Factors Mathematics • 4th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to find the simplest form of a proper fraction by using common factors.


Students will be able to

  • understand that a fraction is in its simplest form when the only common factor is 1,
  • identify fractions in their simplest form,
  • find a proper fraction in its simplest form by dividing the numerator and denominator by one or more common factors.


Students should already be familiar with

  • finding the factors of a number,
  • finding common denominators,
  • creating equivalent fractions.


Students will not cover

  • the term greatest common factor.

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