This book is situated in a study of learning to teach science, informal science education and identity. The study initially aimed to learn how teachers’ identities were influenced by teacher learning experiences in informal science institutions and sites. Jennifer D. Adams is a Tier 2 Canada Research Chair and Professor at the University of Calgary and an NSF Early CAREER awardee. Prior to joining the faculty at the UofC, she had appointments at the City University of New York (Brooklyn College and The Graduate Center), the American Museum of Natural History, New York City Outward Bound and as a high school science teacher with the (then) New York City Board of Education. Brooklyn in da House!