Spend some time in an engaged classroom and you will most likely hear the buzz of teacher and students’ voices, multiplication tables being explored, pencils and crayons slide-tapping across paper, and a variety of devices whirring in the background (printer, tablets, 3D printers, science equipment, etc.). The classroom can be an incredible and dynamic space of active learning, but for some it can also be a cacophony of sound that makes learning difficult and communicating a challenge.