Are we losing our ability to read gestures and facial expressions with our culture and society depending less on face-to-face communications? Some of the latest thinking is that speech evolved from gestural endeavors. Babies can be taught sign language. My cousin used this to communicate with her baby. Hand gestures, the most basic forms of communication, might have preceeded spoken language and if you can see how babies learn this, signing before the ability to say the words, it makes sense.
Laura Berg, a teacher in Canada, has worked with her baby, Fireese, to teach her signing. In giving me permission to use her video, Laura told me that she lectures on the topic of using sign language to promote literacy at universities in Canada. She also, as a teacher, uses signing in her "mainstream" classes.
Another interesting video of signing to the song, Son of a Preacher Man, is below the flip.