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Animal Ears
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This activity (page 2 of the PDF under SciGirls Activity: Horse Ears) is a full inquiry investigation into animal behavior and communication.
Auditory Acuity
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This activity (8th activity on the page) tests learners' ability to identify things using only the sense of hearing.
Catch the (Sound) Wave!
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See and hear how sound waves travel through different types of materials. Extend the experiment online and learn how you can "see" with sound waves using ultrasound.