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Discover why the sky is blue and the sunset is red.
Air trapped between two pieces of clear plastic produces rainbow-colored interference patterns.
Play songs by banging a PVC pipe against your palm.
Build a pinhole camera you can really get into.
Model the behavior of light reflecting off soap film surfaces.
Why do we see colors in soap bubbles?
Discover waves you never node about.
Light plus light equals dark.
Use index cards to show how light plus light equals dark.
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Attribution: Exploratorium Teacher Institute
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