Saturday marks the Museum of Contemporary Art‘s first Family Day of the season. From 11 AM to 3 PM, families with children 12 and under can enjoy free admission and a range of activities inspired by Alexander Calder’s The Circus (see the video below). In addition to half-hourly dance workshops, there’ll be three hands-on “creation stations” where kids can make their own circus materials, including sculptures, mobiles, and musical instruments using wire and found objects. There’ll also be a scavenger hunt, toddler station, and refreshments. Call 312-280-2660 for more.