Have you ever had the experience of knowing what you want to say, but not really being able to express the words in a way that makes it clear to another what you mean to say? If you have, you know that this experience is most frustrating and even maddening when what we have to say is really quite important. With a little thought, perhaps more than a few instances come to mind. There are times when children cannot seem to express what they want to say to their parents. It can work the other way too, when parents become frustrated when their children do not seem to understand what is being said. Teachers and students and parents can be limited by the inability to understand what was said or what it means.