Reflector2 is a wireless streaming product that works with iOS, Android and even Chromebooks that allows teachers and students to share their iPads, Android tablets and Chromebooks to the big screen wirelessly, from anywhere in the room. Recording with voice-over lets teachers record their lessons for future use, while multiple security features keep the classroom safe. With even more innovative features, Reflector 2 is an extremely cost-effective alternative to an Apple TV, utilizing the devices already found in most classrooms. It also works with Mac and PC. You can share your mobile device screens to a computer connected to a projector for a powerful presentation tool.
It's a great tool for teachers to use in their classroom. It's not free, but the pricing is very competitive.