Museums have long been known as an exciting, educational field trip for teachers and students, however, they have the potential to be more. Aside from field trips, some museums offer a range of resources for teachers including professional development sessions. This study followed a sample of classroom teachers as they completed a three-part workshop on Project Based Learning in order to determine in what ways does museum-based professional development change (a) Teacher perceptions of museum resources and (b) Teacher utilization of museum resources within their classroom, as well as what aspects of the museum-designed professional development experience did teachers find most effective in impacting their own teaching. The Experiential Learning Theory and an Awareness, Interest, Desire, Action (AIDA) effect model were used to evaluate how perceptions changed before and after the museum-designed experience. Overall, the trustworthiness of the informal educators and their resources increased, as well as teacher utilization of the resources since participation. Some of the aspects that teachers reported as most effective included their willingness to engage because of their overall enjoyment of the experience. Teachers also emphasized that these workshop sessions enhanced their current teaching practices, and did not simply replace them. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]