The diffusion of the Interactive Whiteboard in schools is in continuous increasing, but, too often, it was simple used to catch students’ attention or transpose on the “big screen” the class activities. In this paper is described a pilot study regarding the development of a Module of Formative Intervention for Prospective Primary Teachers in which the IWB as the role of supporter for the creation of a powerful context in which developed formal interpretation of electromagnetic phenomena starting from the analysis of experimental situations.