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Why are Compact Fluorescent Bulbs More Efficient?
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In this activity, learners explore the relative efficiency of different bulbs, specifically incandescent vs. fluorescent.
Stereoscope
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In this activity, learners construct a device that allows them to view 2-D images in 3-D.
Reusable Rockets
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This activity (located on page 3 of the PDF under GPS: Garbology Activity) is a full inquiry investigation into design optimization using recycled materials.