With the Scratch Board, people can use sensors to control interactive stories and games that they create with the Scratch programming language. By connecting the physical and virtual, the Scratch Board extends the range of what people can design -- and extends what they learn in the process. The Scratch Board comes with several built-in sensors: a light sensor, sound sensor, touch sensor, and slider. It also has four ports where you can plug in your own resistance-based sensors. For example, you can create a Scratch program that controls music and animation on the computer based on your interactions with sensors connected to the Scratch Board.