“…Second, mixed-reality environments enable teachers to practice the application of, and experiment with, learned techniques in a safe, carefully controlled, realistic environment, decreasing the loss of potential student learning time while teachers are perfecting their skills (Garland, 2012; Hixon & So, 2009). One mixed-reality environment that has demonstrated the capacity to prepare teachers for the classroom is TLE TeachLivE ™ (TeachLivE; see Dawson & Lignugaris/Kraft, 2017; Garland, Holden, & Garland, 2016; Garland et al, 2012). TeachLivE is a learning lab designed to provide educators a place to practice teaching with virtual characters (avatars) manipulated by human performers (interactors) in a realistic mixed-reality setting in which interactions occur in real time and can be scripted or spontaneous (TLE TeachLivE ™ , 2018).…”