1. Hearing Aids

2. Origins Miller Reese Hutchinson Why Thomas Edison Lab

3. Development Over Time Ear trumpet Electric Hearing Aids Got more comfortable Worn in different places

4. How It Works

5. The Ear

6. Materials Material How its made Types of hearing aids

7. Purpose Hearing Loss Do hearing aids help Main Purpose

8. Impact Cost Quality

9. Future

10. Creative Types How it filters sound

11. Hearing Aids

12. Works Cited Ear Trumpet. N.d. Web. 21 Apr. 2014.. Hearing Aid Future. N.d. Web. 20 Apr. 2014.. Hearing Aid. N.d. Web. 20 Apr. 2014.. Hearing Aid Parts. N.d. Web. 20 Apr. 2014.. Hearing Aid Picture. N.d. Web. 22 Apr. 2014.. Hearing Aid Types. N.d. Web. 20 Apr. 2014.. Iphone Hearing Aid. N.d. Web. 25 Apr. 2014.. Miller Reese Hutchinson. N.d. Web. 21 Apr. 2014.. Parts of the Ear. N.d. Web. 22 Apr. 2014..