The document discusses the use of audio feedback to provide formative assessment to students. It defines audio feedback as recorded messages distributed digitally to students in response to ongoing or submitted work. There are several potential models of audio feedback delivery, including personal tutor monologues, one-on-one conversations, podcasts, peer feedback, and group tutor conversations. Benefits cited include the ability to provide more detailed and personalized feedback to students compared to written comments alone. Guidelines are provided on using audio effectively and structuring feedback recordings.