Gerald Aungst is a “curiosity engineer” with more than 25 years of professional experience as an elementary teacher and curriculum specialist who empowers learners through inquiry and making. Gerald teaches gifted support and makerspace at Cheltenham Elementary School in suburban Philadelphia, and is also an adjunct faculty member at Holy Family University and the University of Iowa. Gerald is also one of the organizers of Edcamp Philly and a founder of AllAboutExplorers.com. His book, 5 Principles of the Modern Mathematics Classroom, is available from Corwin. You can also connect with Gerald on Twitter at @geraldaungst.