This lesson explains directional terminology used to describe the positions of structures …
This lesson explains directional terminology used to describe the positions of structures relative to other structures or locations in the body. Learners will apply directional terminology by dissecting a three-dimensional object. Lesson developed from original resource by Bobbi D. Dittmer.
Why do humans have two ears? How do the properties of sound …
Why do humans have two ears? How do the properties of sound help with directional hearing? Students learn about directional hearing and how our brains determine the direction of sounds by the difference in time between arrival of sound waves at our right and left ears. Student pairs use experimental set-ups that include the headset portions of stethoscopes to investigate directional hearing by testing each other's ability to identify the direction from which sounds originate.
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