COLUMBIA YOUTH LOCK-IN PARTY, for ages 11-14. Movies, food, games and other activities. 6 p.m.-midnight, East Columbia Branch Library, 6600 Cradlerock Way. Free; registration required. 410-313-7704.
GARDENING TALKS, a master gardener discusses gardening concerns. 10 a.m.-noon, Miller Branch Library, 9421 Frederick Rd., Ellicott City, 410-313-1950; 10 a.m.-noon, Savage Branch Library, Gorman and Knights Bridge roads, Laurel, 410-880-5980. Free.
BUTTERFLY WALK, a butterfly specialist will lead a walk on Mount Pleasant Farm. Sponsored by the Howard County Conservancy. Participants will meet at the Gudelsky Environmental Education Center at the farm, 10 a.m.-noon, 10520 Old Frederick Rd., Woodstock. Free; registration required. 410-465-8877.
OPERA PREVIEW, musical highlights and synopses by Tom Glenn, followed by dessert and a drawing for two tickets to a Washington National Opera performance. Sponsored by Senior Entertainment & Art Ticket Service, 2-4 p.m., Bain Center, 5470 Ruth Keeton Way, Columbia. Free; registration required. 410-313-7281.
LOU GEHRIG'S DISEASE SUPPORT GROUP, for patients and family members and friends of those with Lou Gehrig's disease. Sponsored by the Amyotrophic Lateral Sclerosis Association, 2-4 p.m., Adventist HealthCare, Shady Grove Nursing and Rehabilitation Center, 9701 Medical Center Dr., Rockville. Free. 301-978-9855 or www.ALSinfo.org.
LANGUAGE PROGRAM, for adults and teenagers with English as a second or third language. An opportunity to practice English skills in a group setting. Sponsored by the English Conversation Club, 7:45 p.m. Mondays, Miller Branch Library, 9421 Frederick Rd., Ellicott City. Free. 410-313-1950.
SENIORS FUSED-GLASS JEWELRY CLASS, for ages 55 and older. Participants can create four pieces using precut colored glass for pendants, pins and earrings; a kiln is used to fuse the glass; materials included. Sponsored by the Howard County Department of Recreation and Parks, 10-11:30 a.m., Bain Center, 5470 Ruth Keeton Way, Columbia. $40; registration required. 410-313-7279.
BRIDGE LESSON AND GAMES, for beginners and intermediates. Includes a lesson followed by supervised bridge games. Drop-in program, noon-3 p.m. Tuesdays, East Columbia 50-Plus Center, 6600 Cradlerock Way, Columbia. Requested donation, $6. 410-313-7680.
-- Compiled by LINDA JAMES
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