The Long Island Museum, 1200 Route 25A, Stony Brook will host a Family Drop-In Day on Wednesday, April 24 from 11 a.m. to 1 p.m. Families are invited to join educators for activities in the Nassakaeg One-Room Schoolhouse and the Walt Whitman’s Arcadia exhibit in the Art Museum. Admission is free and reservations are not required. For more information, call 631-751-0066, ext. 212.