Senior centers: Lee, 5722 Lee Hwy.; Langston-Brown, 2121 N. Culpeper St.; Culpepper Garden, 4435 N. Pershing Dr.; Walter Reed, 2909 S. 16th St.; Arlington Mill, 909 S. Dinwiddie St.; Aurora Hills, 735 S. 18th St.
Senior trip: Monday, Dec. 22, U.S. Botanic Garden, D.C., $7. Call Arlington County 55+ Travel, 703-228-4748. Registration required.
Pickleball games and instruction, Mondays, 10 a.m., Walter Reed. Free. Register, 703-228-0955.
Strength training, Monday-Wednesday-Friday, 9 a.m., TJ. $60/15 sessions; $4 drop-in. Details, 703-228-4745.
Seated exercise, Monday-Wednesday-Friday, 9 a.m., Madison. $60/15 sessions; $4 drop-in. Details, 703-228-4878.
Madison Chess Club, Mondays, 9:30 a.m., Madison Comm. Center. Free. Details, 703-228-0555.
Ice skating, Mondays, 8:10 a.m. – 9:20 a.m., Kettler Capitals Iceplex, Ballston Mall, $1. Register, 703-228-4745.
Seniors-only weight room hours, Langston-Brown, $60/15 sessions. Details, 703-228-6300.
Foreign language conversation groups, free. Details, 703-228-4721.
Bilingual Spanish/English book club, Tuesday, Dec. 16, 10:30 a.m., Culpepper Garden. Free. Register, 703-228-4403.
Drop-in volleyball, Tuesdays, 1:30 p.m., Langston-Brown. Free. Register, 703-228-6300.
Beginners full fitness exercise, Tuesdays, 10 a.m., Lee. $60/15 sessions or $4 per class. Details, 703-228-0555.
Arlington Mill Trekkers, Tuesdays, 9:30 a.m. Free. Register, 703-228-7369.
Table tennis, Tuesdays10 a.m., -12 p.m., Walter Reed. Free. Register, 703-228-0955.
Music and movement, Wednesdays, 10:30 a.m., Culpepper Garden. Free. Register, 703-228-4403.
Duplicate bridge, Wednesdays, 10 a.m. -10 p.m., Aurora Hills. Cost $5. Register, 703-228-5722.
Line dancing class, Wednesdays, 9:30 a.m., Walter Reed. Register, 703-228-0955.
Arlington Walking Club, Wednesdays, 9 a.m., $4. Register, 703-228-4403.