Yup.. that is the right way. Im a DPT trained teacher ( took the diploma mainly for my kids)and thats how we were taught during the course. I taught my son similar way and it works wonders. you might want to try the alphabet song too. It goes like this ," Ants eating Apple Aeh aeh aeh (repeat thrice) Aeh is the sound of A. Balls are bouncing beh beh beh (as in burger -buh) ( repeat thrice) Beh is the sound of B. and so on so forth. you can find the book over at borders.
you go girl!