In this chapter, we discuss research on learning from simulations and microworlds. After providing working defi nitions and examples for these environments, we review research on their effectiveness and, where available, on specifi c questions of their information design, interaction design, and instructional guidance design. On the basis of the research fi ndings, we propose extensions to current theories of multimedia learning to involve social and affective processes and outcomes, describe implications for instructional design, discuss limitations of the existing research, and outline areas for future research.
What Is Multimedia Learning with Simulations and Microworlds?Simulations and microworlds are digital environments that enable users to interact with models of situations and phenomena ( National Research Council , 2011 ;Plass, Homer, & Hayward , 2009b ). As the user manipulates objects or parameters, the environment generates dynamic responses based on a set of underlying rules, models, or computations. Simulations and microworlds provide opportunities for active learning ( Mayer, Mautone, & Prothero, 2002 ), affording exploration instead of providing explanation (Rieber, 2005 ).Educators and researchers have posed a number of questions specifi cally linked to the pedagogical use of these resources: Are exploratory environments effective for learning? What support structures should be provided to make them effective? How can they be designed to engage the learner in meaningful learning activities? This chapter will review research that has provided some answers to these questions, propose extensions to cognitive theory in response to these research fi ndings, and describe implications for Plass and Schwartz 730 instructional design. We will then discuss limitations of existing research and suggest areas for future investigations of simulations and microworlds. First, however, we will provide working defi nitions of simulations and microworlds, used in compiling the research studies included in this review.Simulations . Multimedia simulations are designed to depict specifi c phenomena, processes, or systems. Within a particular simulation, the user can adjust various parameters, and an underlying computational model responds by displaying the results of the user's input. Through repeated interactions, such as selecting a range of values for a variable and observing the resulting changes, the learner can arrive at an understanding of the model National Research Council , 2011 ). Broad defi nitions of simulations distinguish conceptual models from operational models . Conceptual models focus on principles, concepts, or facts (e.g., how gases respond to changes in temperature), while operational models demonstrate a series of operations or procedures, such as how to perform a specifi c mechanical task. For the purpose of this chapter, we considered only interactive environments that are based on conceptual computational models to be simulations .Microworlds . Beyond the exploration and investigat...