Recently came across this amazing example of iBeacon use which may spark lots of ideas for education. It's a pretty harrowing topic, but in my mind this kind of iBeacon use opens up all kinds of teachable moments:
"Using Apple's iBeacon technology, which harnesses Bluetooth Low Energy and geofencing to provide micro-location awareness between apps, UNMAS was able to plant invisible, simulated land mines around the exhibit space. Inside the organization's app, also called Sweeper, a land mine "explodes" when an unlucky individual comes across one. A recording then explains the physical injury inflicted by each type of mine"