Two-String Yo-Yo

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Learners build a yo-yo using a piece of wood, PVC pipe, and string. In doing so, learners explore the force of gravity and angular momentum. This activity guide includes step-by-step instructions with images, a video, and focus questions. Drill, hacksaw or jigsaw, and hammer are required. [Activity is publicly available through a web crawler capture on]

Quick Guide

Preparation Time:
5 to 10 minutes

Learning Time:
30 to 45 minutes

Estimated Materials Cost:
$1 - $5 per student

Age Range:
Ages 8 - 18

Resource Types:
Activity, Lesson/Lesson Plan


Materials List (per student)

  • 1 wood piece, any shape and size
  • 1 nail
  • 1 drill with 13/16" paddle bit
  • 8 in PVC pipe, 1/2 in diameter
  • 6 ft String
  • Hacksaw or jigsaw
  • Hammer


  • Physical Sciences
    • Motion and Forces
      • Gravity
      • Momentum and Velocity
      • Rotation Motion
      • Center of Gravity
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations

Informal Categories

  • Toys


To use this activity, learners need to:

  • see
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


Components that are part of this resource:

Includes alignment to state and/or national standards:

This resource is part of:

Access Rights:

  • Free access


  • Watsonville Environmental Science Workshop


  • All rights reserved, Watsonville Environmental Science Workshop, 2011

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