Using Benchmarks to Compare Fractions

This Using Benchmarks to Compare Fractions activity & project also includes:

Introduce a new strategy for comparing fractions by analyzing Melissa's use of benchmarks. Walk the class through her process, calling on students to explain their understanding of each step she took. Then practice this method on two pairs of fractions, the first includes a benchmark fraction while the second requires learners to identify their own. This approach to comparing fractions can be difficult to learn, so consider working through the problems as a whole group to provide the necessary support.

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CCSS: Designed
Pros

  • Models for students the thought process involved in using benchmark fractions for comparison
  • Learning the benchmark strategy deepens fractional number sense 
Cons

  • Visual models needed to support understanding of comparisons with benchmark fractions
  • Requires students have strong number sense and mental math ability
Common Core