I posted before about E learning the alphabet in sign language. We looked at some videos of a few other signs, but she hasn't really been interested in doing those. But she does the alphabet all the time. She remembers about half the letters, and asks me to do the rest with her. Some of them she knows, but they are too hard for her to hold her hand in that awkward position.
Then one day she did a D with one hand and an O with the other hand. I told her that spells "do." She thought that was pretty cool, so she's been doing it ever since. Another day I did a G and showed her that her D and O with my G spelled "dog." She's asked me to do that a few times since then. I also showed her "to," "so," and "go" since she seems to like doing O's.
We read Go Dog Go a few days ago, and I pointed out all the places where it said "do." I think she's making the connection, and it's so cool to watch!