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Two Lenses in One

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Two Lenses in One

In this activity about light, learners explore how water can refract light and change the way they see things. In the "Now Explore" section, suggestions for other liquids are given, and the learners can come up with plenty of their own.

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
10 to 30 minutes

Estimated Materials Cost:
1 cent - $1 per student

Age Range:
Ages 8 - 11

Resource Types:
Activity, Experiment/Lab Activity


Materials List (per student)

  • 1 plastic vial and lid
  • Sink or small bucket of water
  • One white sheet of paper with text
  • 2 pens or markers of different colors


  • Physical Sciences
    • Light and Optics
      • Lenses and Mirrors
      • Reflection and Refraction
    • States of Matter
      • Liquids


To use this activity, learners need to:

  • see
  • see color
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


Includes alignment to state and/or national standards

This resource is part of:

Access Rights:

  • Free access



  • All Rights Reserved, COSI Columbus, ©2009


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