On their way out the door, many teachers stopped to thank me for showing them how to use what they learned. Again, I was reminded that the key to providing professional development that actually makes its way into the classroom is to focus on the "how." Yes, teachers want to know the "what" (what can be done to enhance practice and improve learning). And they also want to know the "why" (why is this important and why should I do what you say). But if the professional development doesn't go beyond the research, and the statistics, and the impassioned appeals for change, even the most open, receptive, eager and ambitous of teachers may not know how to apply what they learned. Someday, I hope to sit still long enough to write a book for teachers. The title will be, How.