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How Loud is Too Loud
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In this activity (described on pages 39-42 of PDF), learners make a paper wheel (on pages 57-60 of PDF) that shows them the relative loudness of different sounds.
Designer Ears: Make “better” ears!
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Find out what it would be like to have ears shaped differently from your own! Design and make different animal ears then try them out.
Bend It, Break It
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In this activity (on pages 25-32 of PDF), learners make models of the inner ear out of pipe cleaners.