Learnovation Lab: iKinder Lessons
Here are some sites for K using iMovie and camera stills on iPads:
This first one is really, really good.
Digital Kindergarten Classroom : Students can use iPads
Langwitches : Use of iPads beyond the apps; workflow fluency with iMovie
And onTwitter, follow: #kinderchat
An app mentioned in several posts I've been seeing recently is Explain Everything: