10 am – 5 pm Earth Rocks! Ages: 12 and underArt Community Family Brooklyn Children’s MuseumCrown Heights
11 am – noon Kids Week: Spring Scavenger Hunt Ages: AllEnvironment Family Free Herbert Von King ParkBedford–Stuyvesant
Noon – 4 pm Arbor Day at the Audubon Center Ages: AllEnvironment Family Free Prospect Park Audubon Center
4 – 6:30 pm City Nature Challenge: Teen Bioblitz! at Brooklyn Bridge Park Ages: 9 and upEnvironment Family Free Visitor Center at the Boathouse, Pier 5 UplandsBrooklyn Heights, DUMBO
Today, 2:30 pm Child’s Play NY Presents: A Midsummer Night’s Dream First Unitarian Church of Brooklyn