THE AARP of Riverdale meets in the afternoon on the third Wednesday of each month, at the Riverdale Presbyterian Church, 4765 Henry Hudson Parkway West. Entertainment and lectures are offered along with business meetings. Call Manfred Segal at 718-549-0088.

THE AGING in America Senior Center, at Aging in America Community Services, 1500 Pelham Parkway, holds social dancing sessions every Monday, from 1 to 3 p.m. Seniors are invited to dance, socialize and make new friends. Call Maria Uzovich at 718-409-7971.

THE FORT Independence Senior Center, at 3350 Bailey Ave., West 234th Street level, offers a wide array of activities, including music, exercise, crocheting, dancing, pokeno, arts & crafts, cards, dominos, pool, trips and speakers. A complete lunch is served Monday through Friday, at noon. A social worker is available on Thursdays. Registration is free. For more information, call 718-796-2950.

THE HARRY and Dora Simon Senior Center of the Riverdale YM-YWHA, at 5625 Arlington Ave., offers numerous activities for people 60 and older, including language instruction, cards and games, exercise, meditation, tai chi, dancing, nutrition information, swimming, bingo, lectures, trips, creative writing, chorus, singing and drama workshops, quarterly talent shows, movies, knitting, painting classes, intergenerational opportunities, cooking, rap groups and bereavement support. A hot, freshly cooked kosher lunch is served Monday through Friday. During the fall and winter, the center serves hot soup every Monday. Transportation is available. Membership is free. Call 718-548-8200 ext. 223 for more information.

JASA, VAN Cortlandt Senior Center, at 3880 Sedgwick Ave., features the following activities for seniors: Daily exercise, painting, discussion groups, knitting, line dancing, movies and more. Case assistance services are available. Kosher lunch is served at noon. Call 718-549-4700.

THE KINGSBRIDGE Heights Community Center, at 3101 Kingsbridge Terrace, is offering free ESL classes (English as a Second Language) as well as preparation courses for the citizenship exam. For further information or to get dates and times, call 718-884-0700 ext. 194.