lessons that use styrofoam coffee cup

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Homemade Headphones from Picnic Supplies

This lesson provides instructions for building a pair of headphones (or speakers) out of inexpensive materials. It makes for a good science project lasting several hours or a quick demonstration in class if you are willing to build ahead of time, though for a single demonstra...

Average: 2.6 (9 votes)
12 Aug 2013 guy homemade headphones