Double or More

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Choose a recipe to double (or triple, quadruple, or halve). Show everyone the recipe and engage them in figuring out: How much will we need to increase the recipe to feed everyone? Once the group has decided how to alter the recipe, assign each pair an ingredient to increase and measure out. As learners figure out how to double, halve, or triple those amounts in order for the recipe to stay in proportion, they explore fractions, multiplication, and addition. Try this with food, a “recipe” for combining paints to yield certain colors, or a play dough recipe. [Activity is publicly available through a web crawler capture on]

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
30 to 45 minutes

Estimated Materials Cost:
1 cent - $1 per group of students

Age Range:
Ages 4 - 14

Resource Type:


Materials List (per group of students)

  • A recipe (food, play dough, etc.) and related ingredients and supplies
  • Large sheet of paper and marker


  • Mathematics
    • Algebra
      • Patterns
    • Measurement
      • Units of Measurement
      • Systems
    • Number and Operations
      • Number Systems
      • Operations
  • The Nature of Technology
    • The Design Process
      • Problem Solving
  • The Nature of Science
    • The Scientific Process
      • Asking Questions
      • Conducting Investigations

Informal Categories

  • Arts and Crafts
  • Food and Cooking


To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves teamwork and communication skills
  • Uses STEM to solve real-world problems
  • Involves hands-on or lab activities


Foreign language versions of this resource:

Access Rights:

  • Free access


Source Collection

  • Mixing in Math


  • , © 2010, TERC, Inc., MA., 2010

Funding Source:

  • NSF, ESI-0406675 and DRL-0713537