Virtual reality headsets can be used to replace the environment with a virtual reality setting. In an educational setting this can allow students to learn through experience either using a game, movie or a pre-recorded 360-degree virtual reality environment. Surprisingly there are cheap options already available, such as google cardboard that works with a special cardboard headset and your own smartphone. Google expeditions is a platform developed for educational purposes allowing students to go on virtual field trips.
Link Google cardboard: https://arvr.google.com/cardboard/
Link Google expeditions: https://artsandculture.google.com/explore