Dangerous Decibels Program Walk-Through: 4. How Do We Damage Our Hearing?
“How Do We Damage Our Hearing?” Recap
Key Points
Share the image of the healthy hair bundle, explain it is an image of a healthy hair bundle onto of a hair cell, standing nice and straight.Sound that is too loud can damage the hair cells of our inner ear.Hearing an extremely loud sound even one time can also cause you to lose some of your hearing. Once your hearing is damaged, there is nothing that will make you hear as well as you do now.Damage to the hair cell is permanent and cannot be repaired.Materials
- Pipe Cleaners
Color: Usually white is the best choice since it will resemble the hair bundle in the photographs more closely. Once color is introduced, the students become distracted with trading colors, wanting their favorite color etc.
Length: In most cases we use the full 12-inch pipe cleaner length, however a shorter 6-inch length works just as well if you want to cut the pipe-cleaners in half and increase the number that you have available to teach with.
Thickness: We recommend the standard 6 mm size
Name: When shopping for replacement pipe cleaners, they are typically sold as “Chenille Stems” in craft stores. Actual pipe cleaners sold in tobacco supply stores are too thick and stiff to work well. - Images
The signs are available for download under RESOURCES if your images become damaged and need replacement. Laminating the images also helps them last longer.
