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Camera Projector
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In this activity (posted on March 14, 2011), learners follow the steps to construct a camera projector to explore lenses and refraction.
Self-Portrait Silhouettes: Activity 2
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In this activity, learners make a photographic image—without a camera!
Self-Portrait Silhouettes: Activity 1
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In this activity, learners make a photographic image--without a camera!
Stroboscope
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In this activity (posted on March 20, 2011), learners follow the steps to construct a stroboscope, a device that exploits the persistence of vision to make moving objects appear slow or stationary.
Photosynthetic Pictures Are Worth More Than a Thousand Words
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This activity provides an opportunity for learners to observe and examine how carbon dioxide, water, and light produce glucose/starch through a process called photosynthesis.