1. Assistant Professor of Practice, Director, (eballard@wustl.edu), Social System Design Lab, Brown School, Washington University, 1 Brookings Drive, Campus Box 1196, St. Louis, MO 63130. USA
2. K‐12 Education Program Coordinator, (allison.farrell@wustl.edu), Social System Design Lab, Brown School, Washington University in St. Louis, 1 Brookings Drive, Campus Box 1196, St. Louis, MO 63130. USA
3. Assistant Professor, (michael_long@gwu.edu), Department of Prevention and Community Health, George Washington University Milken School of Public Health, 950 New Hampshire Avenue, NW, Washington, DC 20052. USA