Reflection: Developing a Conceptual Understanding Decomposing and Composing Fractions - Section 3: Closure


From past experiences, I have learned to never assume what a student knows.  Just because a student can add and subtract fractions, they may not know how to decompose or compose fractions.  It may have something to do with not being familiar with the terminology.  Whatever the case, as teachers, we should at least do "mini" lessons on a concept to check for understanding.  

My students must take the Constructive Response Assessment three times a year.  This is an assessment provided by the state.  I noticed that my students did not understand composing and decomposing fractions during the first assessment.  Therefore, this lesson is very important to make sure my students are successful when they are required to use the skill in the future.

  Never Assume
  Developing a Conceptual Understanding: Never Assume
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Decomposing and Composing Fractions

Unit 1: Fractions
Lesson 14 of 22

Objective: SWBAT break apart fractions to their unit fractions, then compose them back.

Big Idea: Fractions can be broken apart into unit fractions.

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10 teachers like this lesson
Math, Fractions, Number Sense and Operations, fraction composition, fraction strips, fraction decomposition, manipulatives, unit fractions
  50 minutes
students working on decomposing fractions
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