I came across techchef4u while looking at apps and added it to the app resource tab. This is a blog with most of the posts about free app reviews. But splattered among the app reviews are posts with example lessons. As a teacher - having the visual of seeing how the apps are being used can make it that much easier to implement in the classroom. An easy way to navigate to the lessons is to choose the iPad Lesson link under categories.
Another new site on the app resource tab is Best Apps for Kids. Another site that has reviewed apps, screenshots, grade level, and subject level breakdowns. But the bonus of this site is Free App Fridays. Free is worth a look!
Happy App Hunting!