The Hook-Ups system is a set of technologies and activities that enables young people to create interactive experiences by programming connections between physical and digital media. With the Hook-Ups system, young people integrate sensors with a myriad of materials to create their own tangible interfaces. These interfaces control digital images and sounds in computer programs (such as games or responsive art pieces) the young people write. For example, a 10-year-old created a paper-plate-based flying saucer, added a sensor, then wrote a program to control an animation of a flying saucer on her computer screen.