Arrows

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In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners. Even thought the pipe cleaners are the same length, learners will discover that one appears shorter than the other. [Activity is publicly available through a web crawler capture on Archive.org.]

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
Under 5 minutes
Estimated Materials Cost:
1 cent - $1 per student
Age Range:
Ages 6 - 11
Resource Type:
Activity
Language:
English

Materials List (per student)

  • 4 pipe cleaners of the same size and color
  • scissors
  • a friend

Keywords

Subjects

  • Life Sciences
    • Human Senses and Perception
      • Vision
      • Perception
  • Physical Sciences
    • Vibration and Waves
      • Light and Optics
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations

Audience

To use this activity, learners need to:

  • see
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other

This resource is part of:

Access Rights:

  • Free access

By:

Rights:

  • All rights reserved, WGBH Educational Foundation, 2003

Funding Sources:

  • National Science Foundation, 0229796
  • Corporation for Public Broadcasting
  • The Arthur Vining Davis Foundation
  • PBS