Teaching Resource

Castles Made of Sand - The Competition - Fraction Subtraction

PDF | 12 pages|Grade: 5

A teacher-faciliated problem solving introduction to fraction subtraction.

While Alan and Ada Ant build sandcastles, students develop a conceptual understanding of fraction subtraction. They use strip diagrams, find common denominators, and adjust partitioning to create fractions with a common denominator.

5 problems include fractions with different denominators.

Use with the whole class to introduce or practice fraction addition or during tutoring or intervention.

This activity includes clear and concise teacher directions and Think Aloud questions, a detailed answer key, and conversation starters that give students what they need to have meaningful academic discussions.

A companion activity, Castles Made of Sand – Brother and Sister, deals primarily with addition.

  Common Core Curriculum alignment

Published by TeachTransform
TeachTransform creates fun math activities that get students involved in real math. We bring decades of education experience to the task, and we believe that students learn best when teachers and students are having fun.

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