PROFILE George Hein Professor Emeritus Lesley University About informal science Projects Understanding Museum Visitors Research Assessing Museum Impact: From Theory to Practice - Summary Report Reports of Visitor Studies in Four Countries Three Responses to Cheryl Meszaros' Evil "Whatever" Interpretation A Reply to Miles' Commentary on Constructivism Making Science Matter: Collaborations Between Informal Science Education Organizations and Schools Is Meaning Making Constructivism? Is Constructivism Meaning Making? The Meaning of Meaning Making Evaluation Visitor Behavior at a Constructivist Exhibition: Evaluating Investigate!! at Boston's Museum of Science Traits of Life: A Collection of Life Sciences Exhibits