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Balance: The Ears Have It


Vestibular System graphicThe vestibular system controls our balance, providing information on spatial orientation for head position and posture. Spinning a student around in a chair demonstrates how the vestibular system senses different types of circular motion. Using these observations, students will design and conduct experiments to explore vestibular function.


Spinning in a chair for the experimentSafety Notes:

Some students may experience nausea and should be excused from being the spinee.

Everyone should watch carefully and be prepared to stabilize the individual who is spinning during the Explore phase.

Spinning should be done in an open area away from tables, lockers, or any other objects. If done indoors, you may wish to lay athletic mats on the floor in case a student falls.


Grade Level: 5-8

Lesson Length: 1 class period

AttachmentSize
Teacher Guide76.04 KB
Student Guide160.16 KB
Hair Cell Model - instructions & slider template32.59 KB
Hair Cell Model - box template372.13 KB
Teacher Notes236.67 KB
Documents in MS Word format737.15 KB

Dr. Fitzakerly's class notes with the pictures of hair cell loss after loud sound exposure are available at www.d.umn.edu/~jfitzake/Lectures/DMED/InnerEar/IEPathology/StereociliaDamage.html.

An interesting website related to hearing is Ultrasonic Ringtones at www.ultrasonic-ringtones.com.