I haven't taught deaf children or have any but I do know for a college class we used plastic eggs in an egg carton to teach braille. We would have a flashcard of the letter at the top of the egg carton and arrange our eggs to make the letter A in braille, I know that's for the blind but sometimes that works also for the deaf. Also holding the child's hand up to your mouth while you say the letter or word also helps by the vibration, then the child would hold his/her hand up tp his/her mouth and try to pronounce the letter or word. It did work with practice. Also a music teacher that I worked with developed a rythem for the alphabet the deaf child would place his/her hand on the drumb and the teacher would drum, while another child or teacher would hold the flashcard of the letter of that specific beat. The child could read and write with a scribe. Of course the teacher developed a curriculum that way for deaf children. Maybe you know of someone who could as well. or even use the guitar.
Seseame street had a show involving deaf children and how they taught them through vibrations. It may be on youtube?
http://www.youtube.com/results?search_query=sesame+street+for+deaf&search_type=&aq=f Sign language videos can be found on youtube as well.
http://www.youtube.com/results?search_query=teaching+deaf+children&search_type=&aq=0&oq=teaching+deafhere is another link
http://www.signingsavvy.com/index.php it was posted by another person but I found it so helpful.
http://specialneedsparenting.suite101.com/article.cfm/help_your_deaf_child_readhttp://deafness.about.com/od/literacy/a/deafliteracy.htmhttp://www.tsbvi.edu/Outreach/seehear/archive/strategies.htmlHere is some that I found searching, maybe they can help.
My thought are with you.