2. There are 3 Parts to the Ear. Sound goes through the outer to the middle to the inner.  Outer Ear  Middle Ear  Inner Ear

3.  (1) Sound Waves pass through the ear canal  (2) Sound beats against the eardrum  (3) Which causes vibrations of the three small bones in the middle ear  (4) When the bones vibrate, sound waves pass through, the inner to the cochlea.  (5) Thousands of hair cells make up the auditory nerve. Movements of the fluid bend the tiny hairs and stimulates electrical impulses, which are carried up the auditory nerve to the brain.

4.  Deep in your ear is a remarkable pea-sized structure called the cochlea. The cochlea is fully developed at birth. Tiny, delicate hair cells in the cochlea send sound signals to your brain, so you can hear different pitches and sounds. If these delicate cells are damaged, you can lose some or all of your ability to hear.

6.  140 dBGunshot  130 dBJet Take-off  120 dBRock Concert  105 dBMP3 at max   95 dBMotorcycle  90 dBLawn Mower  85 dBHeavy traffic  60 dBConversation  30 dBWhisper  15 dBRice Krispies in milk

7. Mild 20-40dB Can hear without amplification but will miss parts of words. Moderate 40-60dBWill have difficulty hearing spoken conversation without amplification. Mod/Severe 50-70dB Conversation must be very loud to be heard without amplification. Aids will help person to be aware of spoken language. Severe 70-90dBMay hear loud sounds close to ear. With amplification may be able to detect speech. Profound 90dB +Amplification may or may not be useful.

8. Behind the ear aid In the ear aid Cochlear Implant Baha System

9.  Multiple Parts even in brief communications.  Ideally, communication is give and take, back and forth.  Problems occur when some part of this breaks down. Message ReceiverFeedback Sender

10.  Familiarity with speaker  Familiarity with topic  Level of noise in the environment

11.  Use kid friendly, familiar words, phrases  Use a normal volume when talking  Use a comfortable rate of speech  Tone of voice can make understanding easier or harder(male/female, adult/child)

12.  Length of Message  State topic and make sure student knows when topic is changed  Amount of information, chatting  Do you repeat the message?  Volume of message

13.  Get the person’s attention before you begin speaking  Face the person and maintain eye contact  Use body language and facial expression  Speak clearly  Use open ended questions to see if the person is understanding  Re-phrase a sentence instead of repeating it over and over