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Mix It Up

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Mix It Up

In this math lesson, learners are introduced to proportional reasoning through modeling, sharing, and questioning techniques. After reading "Oliver's Fruit Salad," learners work together to solve several problems about imaginary fruit salads. Using pieces of fruit shaped candy, learners work in pairs and in small groups to solve other problems that build on the ones solved as a large group. Finally, learners share their solutions. [Activity is publicly available through a web crawler capture on]

Quick Guide

Preparation Time:
10 to 30 minutes

Learning Time:
1 to 2 hours

Estimated Materials Cost:
$5 - $10 per group of students

Age Range:
Ages 8 - 11

Resource Types:
Activity, Lesson/Lesson Plan


Materials List (per group of students)


  • Mathematics
    • Algebra
    • Data Analysis and Probability
      • Data Analysis
      • Data Collection
      • Data Representation
    • Number and Operations
    • Problem Solving
    • Reasoning and Proof

Informal Categories

  • Food and Cooking
  • Literature


To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves teamwork and communication skills
  • Links STEM to other topics of interest such as arts and humanities
  • Uses STEM to solve real-world problems
  • Involves hands-on or lab activities


Access Rights:

  • Free access



  • All Rights Reserved, PBS, ©2012

Funding Source:

  • US Department of Education


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