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.
A set of lenses necessary for the activities outlined in
this teacher's guide must be purchased separately. The
set is available through Carolina Biological Supply Company.
To
order call 1-800-334-5551 extension 6252.
Comment on this GEMS unit.
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