The ARCS model, created by John Keller, consists of a synthesis of motivational concepts and theories combined with a systematic design process to produce an efficient set of strategies to make learning as engaging and intrinsically appealing as possible. This model is parallel to systematic instructional design that focuses on making learning experiences as effective and efficient as possible and the two processes can be integrated. This entry first discusses the theoretical foundation of the ARCS model, the design process for the model, and how the model can be applied. It then discusses recent applications of the model and a recent theoretical modification of the model.