Domagk, Schwartz, and Plass (2010) define interactivity as “reciprocal activity between a learner and a multimedia learning system, in which the [re]action of the learner is dependent up the [re]-action of the system and vice
versa” (p. 1025). They propose a model of interactivity called the Integrated Model of Multimedia Interactivity (INTERACT) which consists of six principal components of an integrated learning system: the learning environment, behavioral activities, cognitive and metacognitive activities, motivation and emotion, learner variables, and the learner’s mental model (learning outcomes).