This website shows how a teacher can use an iPad for a flipped classroom. This website also lists different apps and websites that you can use on an iPad in order to find good content for the classroom.
This website tells about the possibilities the popplet app has. It also lists and shows examples of how to use the app in a classroom. Popplet is a good resource for students to have to make concept maps fun.
This website talks about what a flipped classroom is and the benefits of it for students and teachers. This is a great website to look at if considering having a flipped classroom.