Two years of study with low-income and language-minority communities in California, New York, Arizona, Colorado, and Illinois led to the development of this research-based guide for educators and media designers who create programs for children and families. Diverse Families and Media offers stories of family media use that were documented in the studies, and raise design-relevant questions as well as suggest design principles that can be applied more broadly. The goal of the guide is to help producers and designers gain insight from our research with families, particularly those from underserved groups, and help refine existing programs or give rise to new concepts.