This coming Saturday, September 25, the Mark Morris Dance Group (photo) will perform at Brooklyn Bridge Park, Pier 1, Harbor View Lawn. There will be two dance performances: 2:00 to 2:45 PM and 4:00 to 4:45 PM; between them, from 3:00 to 3:45 PM will be “an all-ages family-friendly workshop.” The events are free and no registration is required. There’s more information here.