This is an interesting program that combines student response system, content delivery system, and student monitoring all in one. Schools can apply for the new iPad pilot program for free (at the moment).
This is the app version of the Mac program and offers a comprehensive solution for diagraming, charting, designing pages, creating wireframes, and more. It is expensive, $49.99, but full of features.
Great blog post about the implementation of an iPad pilot program in a 5th grade classroom. The focus of the article is on student learning rather than technical configuration.
This is a great blog post from edSocial Media regarding using apps as sources. As more schools move towards iPad integration programs, this is increasingly going to be a challenge.
Touted as "the simplest way to make your own interactive eBook" this free program works on both Windows and Mac computers and is a great alternative to Apple's newly released iBooks Author.