Due to its great importance in the media, the start-up world and the political discussion, artificial intelligence (AI) is becoming increasingly relevant as a topic for schools. Until now, approaches to making AI tangible for students without actually programming an AI system have been rare. To address this circumstance, a teaching sequence of unplugged activities about AI has been developed and is presented. AI Unplugged provides CS Unplugged activities that present the ideas and concepts of computer science without using computers. The activities shed light on important concepts of AI and make it possible to convey the central ideas of artificial intelligence to the students. In addition, they offer starting points for discussing social issues around AI. This article describes the activities and their theoretical background, outlines a possible course of instruction, and describes practical experiences with AI Unplugged.