In many scenarios, when working with computers or in computer-supported environments, such as mixed-reality ones, users must accept the machine’s abstractions and rigid interfaces, which augments our capabilities only in virtual dimensions. To cope with this issue, we design, build and test a solution to projection-based augmented reality - called the Augmented Desk: a physical space where people can work and learn, collectively or individually, by using day-to-day tools such as pen and paper.