This document describes a study that developed a smartphone application called "9-1-1 Heroes" to teach emergency skills to children. The study team included doctors, researchers, developers and others. Children participated in baseline and post assessments involving simulated emergency situations. Between assessments, participants received either a 45 minute educational session involving didactic teaching and simulations using the app, or traditional teaching. Results showed the intervention group identifying emergencies at a higher rate than the traditional group. Further development and research on the app and simulations teaching is planned.