"Let's Talk" will bring together professionals who are engaged in facilitating, evaluating or studying dialogue in STEM and history-based institutions for a symposium in Summer of 2015 structured as a 'meta-conversation' about what we know about dialogue. The project addresses the lack of a generalizable body of knowledge about dialogue, the need for instructional models and theory to inform the use of Dialogue programming, and the opportunity to prepare future museum professionals. Co-PI's: Kris Morrissey and Robert Garfinkle. Key activities include: Research Synthesis Paper; Symposium of professionals across STEM and history-based museums; Development of theory-based resources.