Use what you know...
You are the expert in your classroom. These are some supports to help you plan a lesson that will incorporate the iPad.
Pull it all together
Understanding by Design and the Backward Design model
Some information about Understanding by Design
Dr. Beverly Epps of the University of Mary Washington College of Graduate and Professional Studies discusses the "understanding by design" model.
Uploaded to YouTube by jstclairatumw on Sep 29, 2008
Here is a basic introduction to Understanding by Design
Understanding and Essential Questions
Uploaded to YouTube by bachenheimeb.
Another way of looking at lesson planning with the Backward Design model: http://digitalliteracy.mwg.org/curriculum/lesson.html