Marshmallow Catapult

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In this activity, learners explore physics by building a catapult that launches marshmallows with household objects. This activity comes with step-by-step instructions and offers extensions for the activity and an explanation for the science behind catapults via the Kids Guinness World Records. This activity uses mostly inexpensive materials and can be done at home. Safety information: this activity recommends the use of a hot glue gun.

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
30 to 45 minutes

Estimated Materials Cost:
$5 - $10 per student

Age Range:
Ages 8 - adult

Resource Type:


Materials List (per student)

  • Bulldog clips
  • Bottle caps
  • Popsicle sticks (two sizes)
  • Marshmallows
  • Hot glue gun


  • Engineering and Technology
    • Engineering
  • Physical Sciences
    • Energy
      • Potential and Kinetic Energy

Informal Categories

  • Arts and Crafts


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Access Rights:

  • Free access



  • All rights reserved, 4-H., 2020