Takoma Park blood pressure testing Performed by a nurse. Thursday, 11:30 a.m.-12:30 p.m. Takoma Park Community Center, 7500 Maple Ave. 800-542-5096. Free.

Music and science documentary: “The Music Instinct: Science and Song ,” screen Elena Mannes’s 2009 documentary, which explores the relationship between music and the brain. Thursday, 1:15 p.m. Holiday Park Multiservice Senior Center, 3950 Ferrara Dr., Wheaton. 240-777-4999. Free.

Drop-in tai chi Student-led sessions. Fridays, 9:15 a.m. Friendship Heights Village Center, 4433 S. Park Ave., Chevy Chase. 301-656-2797. www.friendshipheightsmd.gov. $3; registration required.

“Home Alone” class for kids Teaches students ages 8-11 how to spend brief periods of time alone. Topics include answering the door and telephone and calling 911. Saturday, 9 a.m.-noon. MedStar Montgomery Medical Center, 18101 Prince Philip Dr., Olney. 301-774-8881. www.medstarmontgomery.org/classes. $35, registration required.

Adventist HealthCare walking club Meets 8 a.m. Tuesdays in the food court. Westfield Montgomery Shopping Mall, 7101 Democracy Blvd., Bethesda. 301-315-3030. www.adventisthealthcare.com/health. Free.

Seniors fitness class For age 55 and older; an instructor leads a weekly 45-minute class focusing on strength, flexibility, balance and cardiovascular endurance. Tuesday, 9 a.m. MedStar Montgomery Medical Center, 18101 Prince Philip Dr., Olney. 301-774-8881. Free, registration required.

“Coping With Change” Jamie Lomason leads a discussion on dealing with life changes in a positive way. Tuesday, 1 p.m. Margaret Schweinhaut Senior Center, 1000 Forest Glen Rd., Silver Spring. 240-777-8086. Free.

Lymphedema support group Donna Orr Morgan and Shiona L. Thompson lead a discussion of “Living Your Best Life With Lymphedema.” Sponsored by Adventist Rehabilitation Hospital of Maryland. Tuesday, 6:30 p.m. Long Branch Senior Center, 8700 Piney Branch Rd., Silver Spring. 301-891-5327. dorr@adventisthealthcare.com. 240-777-6975. Free.

Infant Safety and CPR For parents of infants 1 and younger; learn about safety, such as dealing with choking, and how to do CPR. Wednesday, 6-8 p.m. Shady Grove Adventist Hospital, 9901 Medical Center Dr., Rockville. 800-542-5096. www.adventisthealthcare.com. $40; per couple, $55. Registration required.

Square dancing and lessons New dancers welcome; come in casual dress. Wednesday at 7 p.m. North Chevy Chase Christian Church, 8814 Kensington Pkwy., Chevy Chase. 301-587-5861. www.gerrymanders.net. $6.

Gaithersburg blood pressure testing Performed by a nurse. Wednesday, 9:30-11:30 a.m. Gaithersburg Upcounty Senior Center, 80-A Bureau Dr. 301-258-6380. www.gaithersburgmd.gov. Free.

— Compiled by Lisa M. Bolton

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