The aim of this ground-breaking project is to improve our understanding for how to teach sign languages to adults as second/additional languages. Internationally, there is significant demand for sign language classes, but relatively little is known about the process involved when hearing adults learn a sign language, or similarities and differences to second language learning of spoken languages. This project will develop and test the efficacy of a range of innovative teaching materials and approaches, as well as create the first standardised Australian Sign Language (Auslan) test for adults. It aims to significantly improve the quality of Auslan teaching at our partner institution and provide a model of best practice internationally.