“…The CT+ modality allowed the lead and co-instructor to switch between active-learning activities and lecturing depending on the phase of the CT+ timeline. In particular, the CT+ timeline followed the basic elements of the 5E model as described by Tanner (2010) : 1) engagement (i.e., engage interest and activate students’ prior knowledge with a question, task, or problem), 2) exploration (i.e., student-driven information acquisition by grappling with a problem on their own or in groups), 3) explanation (i.e., the introduction of terms and concepts by the instructor), 4) elaboration (i.e., application of the newly acquired knowledge to a novel situation), and 5) evaluation (i.e., opportunities for students to reflect on and demonstrate their understanding or mastery of concepts and skills; Atkin and Karplus, 1962 ; Tanner, 2010 ; Withers, 2016 ). Thus, before class and at the start of class during the iRAT, students are experiencing engagement; however, during the broad concept introduction, one of the two instructors is Explaining terms and concepts.…”