The Fraction Challenge

In this activity, students will practice adding and subtracting fractions. They will create expressions to match given criteria (e.g., the greatest value, the least positive value, etc.). Students will reason abstractly and structurally, arguing that their expressions are the greatest or least possible. This activity has been added to our new K-5 Collection! French translation courtesy of Jocelyn Dagenais: https://teacher.desmos.com/activitybuilder/custom/5a8f0798428d31093998db0b Dutch translation courtesy of Ari Fijan: https://teacher.desmos.com/activitybuilder/custom/5bf067fb4f4fdf5a649cb542

By Desmos _

This activity can take 15-45 minutes: You can instruct as a small group, a quick transition, or with your full class and students on devices. Today's Goals • Add and subtract fractions with unlike denominators. • Add fractions to create the greatest possible value, and subtract fractions to create smallest value. • Language Goal: Discuss different ways adding and subtracting fractions with unlike denominators. Discuss strategies for making the smallest or greatest value. (Speaking and Listening) Prep Checklist • Assign the activity if you would like students working on their own devices. • Click Project Screens to show this activity to the class or a small group.