Family calendar

Saturday, Sept. 8

10 am–5:30 pm: Butterfly garden. Prospect Park (enter at 450 Flatbush Ave. at Ocean Avenue). $6, $2.25 seniors, $1 kids 3 to 12 years, free for children under 3. Call (718) 399-7339 for info.

10 am–5 pm: Browse classes. Brooklyn Arts Exchange (421 Fifth Ave., at Eighth Street in Park Slope). Free. For info, call 718) 832-0018.

10 am–4 pm: Vintage subway cars. New York Transit Museum (Boerum Place at Schermerhorn Street in Brooklyn Heights). Call (718) 694-1600 for information or visit ww.mta.info/mta/museum.

Noon–4 pm: “Sea Life Sock Hop.” New York Aquarium (West Eighth Street at Surf Avenue in Coney Island). $12, $8 kids ages 2 to 12 and for seniors, children under 2 admitted free. For info, call (718) 265-FISH.

12:30 pm and 2:30 pm: “The Prince and The Magic Flute.” Puppetworks (338 Sixth Ave., at Fourth Street in Park Slope). $8 adults, $7 kids. Reservations suggested. For info, call (718) 965-3391.

2–4 pm: Creative Art-Making. The Brooklyn Museum (200 Eastern Pkwy., at Washington Avenue in Prospect Heights). $8 adults; students with valid ID: $4; Adults 62 and over $4; members and children under 12 free. For info, call (718) 638-5000.

Sunday, Sept. 9

Noon–3 pm: Browse classes. The Brooklyn Conservatory of Music (58 Seventh Ave., at Lincoln Place in Park Slope). Free. For info, call (718) 622-3300.

1 pm: “Revenge of the Herbs.” Fort Greene Park visitor center (high on the hill near the Myrtle Avenue and Washington Park Entrance). Free. For info, call 311 and ask for the Urban Park Rangers.

1, 3 and 5 pm: Circus Amok performance. Prospect Park (enter park at Ninth Street and Prospect Park West). Free. For info, visit www.circusamok.com.

12:30 pm and 2:30 pm: “The Prince and The Magic Flute.” See Saturday, Sept. 8.

Noon–4 pm: “Sea Life sock Hop.” See Saturday, Sept. 8.