Workshop. Lego Architects. 10 a.m.-noon, Robie House, 5757 S. Woodlawn Ave., 312-994-4000, gowright.org, $5 per child, free for accompanying adults. Participants use Legos to create a 3D model of a floor plan design. Visit gowright.org to buy the required advance tickets. Appropriate for children ages 6 and up with an adult.