4th Grade Lesson: Subtracting Fractions: Same Denominators


Students solve subtraction number stories that use fractions and think about the steps that are repeated. They consider how they know when to stop a repetition, and map different strategies onto kinds of repetition in computer science.


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Activity Summary

Students solve subtraction number stories that use fractions and think about the steps that are repeated. They consider how they know when to stop a repetition, and map different strategies onto kinds of repetition in computer science.

Math Connections

Students solve a number story involving subtracting fractions less than one with same denominator.

CS Connections

Students consider when and why you might use countable or conditional repetition when subtracting fractions.

Materials

Scratch Projects

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Topics

  • Repetition
  • Subtracting fractions