ASL 1-2 Lessons.  Links to videotaped sign language lessons.
When hearing people begin to learn sign language , an often asked question is "how do people lose their hearing?" Although for many Deaf people, deafness is not about loss but rather a way of being, the answers to students' questions about hearing and hearing loss are valid and help them to see Deaf issues in context of the larger, hearing population, and perhaps understand better some of the conflicts between Deaf and Hearing cultures.
The Ear

Journey into the World of Hearing

The Ear - Washington U.

How We Hear

How your brain understands what your ear hears

The Senses: Hearing theme page

Loudness scale

The Ear and Hearing classroom handout

Audiology

What does hearing loss sound like?