BELTSVILLE MAGIC SHOW, Michael Chamberlin performs for ages 6-12. 2 p.m., Beltsville Library, 4319 Sellman Rd., Beltsville. Free. 301-937-0294.
HYATTSVILLE CHESS CLUB, instruction by Ted Fagan, for all ages and skill levels. 7 p.m., Hyattsville Library, 6530 Adelphi Rd., Hyattsville. Free. 301-985-4690.
COLLEGE PARK NEEDLE ARTS, an informal weekly gathering to work on quilting, knitting, embroidery and counted cross-stitch, sponsored by the College Park Needle Arts Society. 9:30-11:30 a.m., Old Parish House, 4711 Knox Rd., College Park. Free. 301-277-9630.
AVIATION MUSEUM MOVIE, for all ages, "The Little Prince" (1974), starring Richard Kiley and Bob Fosse, a musical based on Antoine de Saint-Exupery's story about a pilot who survives a crash landing in the Sahara desert and meets a special little boy. Popcorn and lemonade served. 2 p.m., College Park Aviation Museum, 1985 Cpl. Frank Scott Dr., College Park. Adults, $4; seniors, $3; ages 18 and younger, $2. 301-864-6029 or www.collegeparkaviationmuseum.com.
LANDOVER GYMNASTICS WORKSHOP, for ages 18 months to 14 years with an adult, instruction in various kinds of gymnastic equipment. 6-7 p.m., Prince George's Sports & Learning Complex, 8001 Sheriff Rd., Landover. $4 per child with an adult companion; maximum of three children per one adult. 301-583-2400.
HYATTSVILLE BOOK TALK, Stephanie Stokes Oliver discusses her book "Song for My Father: Memoir of an All-American Family," about Charles M. Stokes, a black Republican leader in the 1940s and '50s. 6:30 p.m., Karibu Books, Prince George's Plaza, 3500 East-West Hwy., Hyattsville. Free. 301-559-1140.
COLLEGE PARK FARMERS MARKET, fresh fruits and vegetables sold in an open-air market, sponsored by the Maryland-National Capital Park and Planning Commission. 7 a.m.-noon, Ellen Linson Swimming Pool parking lot, 5211 Paint Branch Pkwy., College Park. Free. 301-277-3717.
LAUREL BUTTERFLY EVENT, for ages 10 and older, a guided three-mile hike to learn about butterflies and their role in the ecosystem and to identify species common to the region. Field guides recommended; bring water and dress appropriately. 8:30-11:30 a.m., Patuxent Research Refuge, North Tract, Route 198, between Baltimore-Washington Parkway and Route 32, Laurel. Free; reservations required. 301-497-5887.
LARGO STORY TIME, for ages 3-5. 11 a.m., Largo-Kettering Library, 9601 Capital Lane, Largo. Free. 301-336-4044.
FORT WASHINGTON FESTIVAL, rock-wall climbing, a moon bounce, hand-dance lessons and an opportunity to make your own music video. Noon-4 p.m., Tucker Road Community Center, 1771 Tucker Rd., Fort Washington. $3; with center ID, $2. 301-248-4404.
HYATTSVILLE AUTHOR APPEARANCE, Na'im Akbar discusses his book "Akbar Papers in African Psychology." 11 a.m.-1 p.m., Karibu Books, Prince George's Plaza, 3500 East West Hwy., Hyattsville. Free. 301-559-1140.
TOOL MUSEUM, displays and demonstrations of 19th-century farm implements, household items and trade tools. 1-4 p.m. Saturdays and Sundays, Duvall Tool Museum, Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. Free. 301-627-6074.
UPPER MARLBORO BOAT TOUR, an educational river-ecology tour on board the Otter. 2-3 p.m. Saturdays and Sundays, Patuxent River Park 16000 Croom Airport Rd., Upper Marlboro. Free; registration required. 301-627-6074.
CAPITOL HEIGHTS ADOPTION, information about adopting an older African American child, sponsored by Adoptions Together. 2-3:30 p.m., Everlasting Life Health Complex, 9185 Central Ave., Capitol Heights. Free. 301-439-2900.
WILDFLOWER NATURE PROGRAM, for ages 16 and older, a discussion of the role of wildflowers in the ecosystem and methods of identifying them; bring a field guide, water and a magnifying glass. 8:30-10:30 a.m., Patuxent Research Refuge, North Tract, Route 198, between the Baltimore-Washington Parkway and Route 32, Laurel. Free; reservations required. 301-497-5887.
FORT WASHINGTON SCRABBLE GROUP, for all skill levels, how to improve your game strategy. 6:45 p.m., Sipp'ss Cafe, 10707 Indian Head Hwy., Fort Washington. Free. 301-868-6360.
AVIATION MUSEUM CRAFT WORKSHOP, ages 6 and older will create colorful paper airplane models. Noon-4 p.m. College Park Aviation Museum, 1985 Cpl. Frank Scott Dr., College Park. $4; seniors, $3; ages 2-18, $2; materials $2. 301-864-6029.
BOWIE LIBRARY MEETING, the Bowie Friends of the Library discuss fundraising, volunteering and special projects. 7 p.m., Bowie Library, 15210 Annapolis Rd., Bowie. Free. 301-262-7000.
DISTRICT HEIGHTS CHESS CLUB, tips from instructor Ted Fagan. 7 p.m., Spauldings Library, 5811 Old Silver Hill Rd., District Heights. Free. 301-817-3750.
LAUREL PUPPET SHOW, "Who's Afraid of the Little Brown Bat?," about a bat's night activities. 11:30 a.m. and 1:30 p.m., National Wildlife Visitor Center, Powder Mill Road, between the Baltimore-Washington Parkway and Route 197, Laurel. Free. 301-497-5887.
GLENARDEN STORY TIME, for ages 2-3, 10:30 a.m.; for ages 4-5, 11:30 a.m., Glenarden Library, 8724 Glenarden Pkwy., Glenarden. Free. 301-772-5477.
LAUREL BUTTERFLY EVENT, for ages 8-10, learn about butterfly life cycles and adaptations and search for them in their natural habitat. 1-2:30 p.m., Patuxent Research Refuge, North Tract, Route 198, between Baltimore-Washington Parkway and Route 32, Laurel. Free; registration required. 301-497-5887.
-- Compiled by LISA MARTIN
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