This event guide features three related explorations in which learners investigate the following science concepts: how you design and build a structure helps determine how strong it will be; different materials are useful for making different kinds of structures and different parts of structures; and, walls, roofs, and bridges need to be supported in special ways. Exploring Structures is one unit in the Peep Event Kit, which also offers explorations of shadows and ramps, respectively. The guide provides an agenda for a 1-hour science event, a customizable flyer and family handouts (English and Spanish). Learners can view a related Peep and the Big Wide World video story before or after the activity.