An outreach programme centred around nuclear physics making use of a LEGO ® Mindstorm ® kit is
presented. It consists of a presentation given by trained undergraduate students as science
ambassadors followed by a workshop where the target audience programs the LEGO ® Mindstorm ® robots
to familiarise themselves with the concepts in an interactive and exciting way. This programme has
been coupled with the CERN-ISOLDE 50th anniversary and the launch of the CERN-MEDICIS facility in
Geneva, Switzerland. The modular aspect of the programme readily allows its application to other
topics.