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Stereoscope
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In this activity, learners construct a device that allows them to view 2-D images in 3-D.
Periscope
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In this activity, learners construct a device that allows them to look over ledges or around corners.
Sensory Hi-Lo Hunt
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In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture.
The Old White Sheet Trick: Light and Insect Behavior
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In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.