Catapult

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In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device. This activity can be used as a lesson on simple machines, motion/forces or construction.

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
1 to 2 hours
Estimated Materials Cost:
$10 - $20 per student
Age Range:
Ages 8 - 18
Resource Types:
Activity, Model
Language:
English

Materials List (per student)

  • wooden base, 1 1/2 in x 5 in x 3/4 in
  • wooden arm, 3/4 in x 3/4 in x 5'
  • 4 wooden tongue depressors, 6 in long x 3/4 in wide
  • 2 machine screws, 10-24 x 2 1/2 in long
  • 2 teflon lock nuts, 10-24
  • 4 wood screws, 3/4 in long
  • 1 sheet metal screw, pan head, 1 in
  • wooden spring-loaded clothespin
  • plastic drinking straw
  • rubber band
  • plastic spoon
  • 3/16 in drill bit
  • electric drill
  • hot glue stick and gun
  • projectile (i.e. penny or other coin)

Keywords

Subjects

  • Engineering and Technology
    • Technology
      • Construction
  • Mathematics
    • Measurement
  • Physical Sciences
    • Energy
      • Potential and Kinetic Energy
      • Energy and Power
      • Work and Machines
    • Motion and Forces
      • Machines
      • Projectile Motion

Informal Categories

  • Model Building
  • Toys

Audience

To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other

This resource is part of:

Access Rights:

  • Free access

By:

  • Rathjen, Don

Rights:

  • All rights reserved, Exploratorium, 2002