Developing a Modern Physics curriculum: a collaborative training course for in-service teachers

We report the experience of a collaborative in-service training course on Modern Physics organized within the PLS-Physics project at Padova University. The main aspects considered in the development of the course were: a) to provide a deeper knowledge of some specific modern physics issues with an interdisciplinary approach; b) to encourage cooperation and sharing of good practices; c) to explore different curriculum design methods, for promoting reflection on expected learning outcomes and assessments opportunities. We present the main outcomes of the course and a first analysis of its follow up at school.