In this ingenious unit, students use two lenses in different ways to create magnifiers, simple cameras, telescopes, and slide projectors. 12-14Yrs

More than Magnifiers

More than Magnifiers


  • Grades 6-8
  • Written by Cary I. Sneider and Alan Gould
  • When a student builds optical instruments with her own hands, she's well on her way to understanding how lenses work to enlarge, capture, reel in, and project the world around us. In this ingenious unit, students use two lenses in different ways to create magnifiers, simple cameras, telescopes, and slide projectors.
  • They learn that lenses have certain measurable properties, which in turn determine the lens best suited for each specific purpose.
  • This guide brings into practical focus important understandings related to physics, optics, and light, and makes a great connection to the GEMS guides Color Analyzers and Microscopic Explorations.
  • Time: Four 30- to 50-minute sessions.
  • ISBN: 0-912511-62-1

Price: $10.50
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Manufactured by GEMS Lawrence Hall of Science


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