How to keep students within one ipad app
In a One iPad Classroom, students will be handling one (your) iPad. Here's a quick way to keep them in the one app you want them to be working in.
Go to Settings from your iPad homescreen.
Within Accessibility, find Guided Access under Learning and turn it to ON.
Set a passcode.
Pick a four-digit code that's easy for you to remember, but that your students don't know.
Go back (arrow at top left) and make sure Guided Access is selected for Triple-click Home.
You have enabled Guided Access. Open your app, and triple-click Home. A new screen will pop up, and you will have to hit Start (upper right). A student can't End or switch apps without the passcode.