A child plays Turtle when they imagine themselves to be the robot. When they move and turn like the robot they think about what they’ve got to do to make the robot to achieve a task. It makes the Roamer an object to think with and connects students to powerful mathematical ideas.Tim Bell and his team from Canterbury University in New Zealand launched Computer Science Unplugged. This is an extension of Papert's Playing Turtle idea. It's a "... collection of free learning activities that teach Computer Science through engaging games and puzzles that use cards, string, crayons and lots of running around. We originally developed this so that young students could dive head-first into Computer Science, experiencing the kinds of questions and challenges that computer scientists experience, but without having to learn programming first." Computer Science Unplugged.