Science centres can be gathering places where people contribute to the design of a future society. Visitors can be asked to exercise their creativity to shape a world in which they would like to live and express views on future scenarios that science and technology are opening up. But what are the museographical tools that we are developing to achieve this goal? Different approaches are being tested: Discussion games, participative animations, debates, innovative multimedia installations and complex multi-faced projects. A series of examples will be discussed in groups. We will end the session having a clearer idea of how to transform science centres into tools for designing the future.