It’s more than a high-tech Viewmaster. Google Cardboard that takes advantage of the gyroscope in your phone to replicate 365 degree, stereoscopic viewing. Cardboard itself is an app which helps you get started, calibrate your device, and learn to manipulate the navigation and controls. A whole stable of apps and games build upon the Cardboard concept, but the populist VR trend is so new that the content is very uneven. Even in Google’s demo, the international capitals captured through Street View pale next to the underwater landscape of the Great Barrier Reef.
Google Cardboard is truly low-barrier. It works as well with Android as with iOS, so more students can use it, manufactured Cardboard cases are inexpensive and you can download a kit to create your own headset.