The College, Career, and Civic Life (C3) Framework from the National Council for Social Studies (NCSS) features an inquiry approach to teaching K-12 social studies in which social studies standards are organized into an "inquiry arc." Inquiry in elementary economics is often underused in practice (Laney 2001). This study describes how a class of fifth-grade students engaged in the inquiry arc in economics through the One Hen unit, a curriculum in which students create social businesses. Students learned concepts and skills in economics, math, and language arts while developing questions, evaluating evidence, and presenting results of their work helping homeless youth in their community.