Interaction design concepts can be hard to describe. Often the best way to both communicate and improve your design is to prototype it quickly and often. This course examines how to integrate rapid prototyping activities into every stage of the interaction design process. A range of methods will be covered — paper prototyping, videos, interactive simulations, Wizard of Oz techniques, and hardware protoyping . Students will learn how to choose the appropriate method to suit different dimensions of a design problem at different stages in the process and the pitfalls of each approach. The course is highly collaborative with hands–on prototyping and testing throughout. Working individually and in teams, students will create rapid exercises, with one prototype developed or iterated each week, with the goal of evolving toward more robust ways of expressing ideas in rich interactive form.