"Protecting Our Hearing" Sound PPT Courseware 2

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"Protecting Our Hearing" Sound PPT Courseware 2

group discussion

What role does hearing play in humans? Do you know anyone who is hearing-impaired? Do you know the reason for their hearing loss?

In recent years, the phenomenon of hearing loss among teenagers has become increasingly prominent. In 2006, the second national sample survey of persons with disabilities showed that among school-age children aged 6 to 14, there were 110,000 children with hearing disabilities.

The ear is an important hearing organ. The eardrum, small bones of the ear, Eustachian tube, cochlea and other structures are closely related to the formation of hearing. Once these structures are damaged, hearing loss or hearing loss can occur.

Using headphones for a long time can damage the cochlea.

After pharyngeal infection, bacteria can easily invade the tympanic cavity along the Eustachian tube and cause otitis media.

Certain antibiotics, such as streptomycin, may cause drug-toxic deafness.

Sharp objects, loud sounds, suppurative otitis media, etc. may cause tympanic membrane damage.

A small guide to ear protection

1. Do not dig your ears or remove earwax with sharp instruments to avoid puncturing the tympanic membrane.

2. Do not use headphones for more than one hour a day, and the volume should not be too loud to avoid damaging the cochlea.

3. When you have a cold, you should treat it promptly to prevent germs from entering the middle ear through the Eustachian tube and causing suppurative otitis media.

group discussion

What are some ways to reduce noise in our lives?

In what situations in our lives do we need to control the volume? Why?

The following phenomena may indicate hearing loss:

1. Interruption is a sign of not being heard clearly.

2. Listen carefully to people’s words in order to hear them more clearly.

3. Loving to observe mouth shapes means you can’t hear clearly.

4. When watching TV, the volume is turned up very loud

5. Speaking too loudly is also a sign of poor hearing

Healthy little actions

Tell your relatives and friends about ear protection.

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Update Time: 2024-09-23

This template belongs to science courseware Fourth Grade Science Volume 1, Textbook Edition industry PPT template

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