THE MENDELSSOHN PIANO TRIO -- 2 p.m. Wednesday. Chamber music concert, part of the Afternoon Tea Series. Harmony Hall Regional Center, 10701 Livingston Rd., Fort Washington. $10. 301-203-6070.
THE HULA MONSTERS -- 6:30 p.m. Friday. Swing surf music, plus games, face painting, moon bounce, food and more. Hyattsville Municipal Building, 4310 Gallatin St., Hyattsville. Free. 301-985-5020.
THE DURATIONS -- 2 p.m. Saturday. Rock-and-roll. Granville Gude Park, 8300 Mulberry St., Laurel. Free. 301-725-5300.
PETER PAN CLUB -- 10:30 a.m. today. Activities for ages 3-5 include aviation-themed storytelling, crafts and games. College Park Aviation Museum, 1985 Cpl. Frank Scott Dr., College Park. $3, plus museum admission: $4; seniors, $3; children, $2. 301-864-6029.
ANIMAL SHOW -- 10-11 a.m. Saturday. Children 2 and older learn about and visit with live animals. Clearwater Nature Center, 11000 Thrift Rd., Clinton. $2; reservations required. 301-297-4575.
FLAG FOOTBALL TOURNAMENT -- 4-6 p.m. Saturday. Teams with players ages 13-17 compete. Glassmanor Community Center, 1101 Marcy Ave., Oxon Hill. Free. 301-567-6033.
DOLL'S TEA PARTY -- 4 p.m. Saturday. Children have tea with a favorite doll. Belair Mansion, 12207 Tulip Grove Dr., Bowie. $15; reservations required. 301-809-3089.
POPLAR HILL HOUSE TOUR -- 12:30 and 2:30 p.m. Sunday. This tour highlights the lives of blacks who lived and worked at Poplar Hill. Poplar Hill on His Lordship's Kindness, 7606 Woodyard Rd., Clinton. $5; seniors, $4; children, $3. 301-856-0358.
"THE MUSIC OF STEPHEN FOSTER" -- 7:30 p.m. Tuesday. Talk and musical presentation by vocalist Henry Wixon. Belair Mansion, 12207 Tulip Grove Dr., Bowie. 301-809-3089.
MARTIAL ARTS MOVIE NIGHT -- 6:30 p.m. Wednesday; 13 and older. Tucker Road Community Center, 1771 Tucker Rd., Fort Washington. $2. 301-248-4404.
ANACOSTIA RIVER BOAT TOUR -- Noon today, Saturday and Tuesday. Wildlife observation tour led by a park naturalist. Bladensburg Waterfront Park, 4601 Annapolis Rd., Bladensburg. Free. 301-779-0371.
DEEP-WATER WALKING -- 7-8 a.m. Mondays-Fridays. A fitness instructor leads a stress-free water workout, for people18 and older. Glenarden/Theresa Banks Complex, 8615-A McLain Ave., Glenarden. $6. 301-772-5515.
DROP-IN WATER AEROBICS -- 7:30-8:30 p.m. today and Tuesday. Water exercise class for people 18 and older. Glenarden/Theresa Banks Complex, 8615-A McLain Ave., Glenarden. $7; seniors, $6. 301-772-5515.
CHESAPEAKE BAY CRITICAL-AREA DRIVING TOUR -- 10 a.m.-3 p.m. Sunday. Self-guided, four-mile driving tour includes interpretive stops, an observation tower and a timber bridge over wetlands. Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. Free. 301-627-6074.
KAYAK KAPER -- 9 a.m.-noon Saturday, September. Exploration of the river on a guided paddle, for ages 18 and older. Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. $18; reservations required. 301-627-6074.
KENILWORTH AQUATIC GARDENS CANOE TOUR -- 9:30-noon Saturday. A naturalist-led tour to search for wildlife; all equipment provided. Bladensburg Waterfront Park, 4601 Annapolis Rd., Bladensburg. $12; reservations required. 301-779-0371.
KAYAK LESSONS -- 10 a.m.-2 p.m. Saturday. Certified instructor. For ages 10 and older; those 16 and younger must be accompanied by an adult. Mount Rainier Nature and Recreation Center, 4701 31st Pl., Mount Rainier. $30. 301-927-2163.
RIVER ECOLOGY BOAT TOUR -- 2 p.m. Sunday. Pontoon tour covers wetlands, wildlife and history. Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. Free; reservations required. 301-627-6074.
LAKE ARTEMESIA HIKE -- 6:30 p.m. Wednesday. A naturalist leads a walk around the lake, for ages 18 and older. Mount Rainier Nature and Recreation Center, 4701 31st Pl., Mount Rainier. Free. 301-927-2163.
PRINCE GEORGE'S COMMUNITY COLLEGE FACULTY -- Through Oct. 28. Works by current and former faculty members. Montpelier Arts Center, Main Gallery, 12826 Laurel-Bowie Rd., Laurel. Free. 301-953-1993.
ALONZO DAVIS -- Through Oct. 28. Mixed-media bamboo sculptures. Montpelier Arts Center, Library Gallery, 12826 Laurel-Bowie Rd., Laurel. Free. 301-953-1993.
JUDITH CONWAY -- Through Sept. 28. Fused glass pieces. Montpelier Arts Center, Resident Artist Gallery, 12826 Laurel-Bowie Rd., Laurel. Free. 301-953-1993.
"RAISE THE ROOF" -- Through Sept. 24. The concept of "home" is interpreted by artists, architects, designers and schoolchildren. John Addison Concert Hall, Harmony Hall Regional Center, 10701 Livingston Rd., Fort Washington. Free. 301-203-6070.
"RUB THE OILS AND STREW THE POWDERS: THE LEGACY OF EUROPEAN HERBS IN EARLY AMERICAN MEDICINE AND CUISINE" -- Through May 2007. Prints from the 16th through 19th centuries, as well as a look at how the common dandelion has been regarded through the ages. Montpelier Mansion, Route 197 and Muirkirk Road, Laurel. Adults, $3; seniors, $2; ages 5-18, $1; 4 and younger, free. 301-953-1376.
"WISH YOU WERE HERE: POSTCARDS OF LAUREL" -- Ongoing. Examples from the turn of the 20th century to today depict Laurel's history and illustrate the evolution of postcards. Laurel Museum, 817 Main St., Laurel. Free. 301-725-7975.
"LIVING THE HEALTHY LIFE: SPORTS, HEALTH AND FITNESS IN THE NEW DEAL ERA" -- Ongoing. Chronicle of the evolution of health and fitness awareness during the 1930s and 1940s. Greenbelt Museum, 15 Crescent Rd., Greenbelt. Free. 301-507-6582.
RADIO PREMIUMS -- Ongoing. Memorabilia related to radio serials of the 1930s-1950s, including "Radio Orphan Annie," "Buck Rogers in the 25th Century" and "Captain Midnight." Radio-Television Museum, 2608 Mitchellville Rd., Bowie. Free. 301-390-1020.
"THE FORGOTTEN WAR REMEMBERED: AMERICA AND THE KOREAN WAR" -- Ongoing. Twenty photographs documenting the war, from growing tension during the late 1940s through the signing of the armistice in 1953. National Archives at College Park, 8601 Adelphi Rd. Free. 866-272-6272.
AFTERNOON TEA -- 2 p.m. Friday. Sandwiches, scones, sweets and teas, for ages 10 and older. Montpelier Mansion, Route 197 and Muirkirk Road, Laurel. $18; reservations required. 301-498-8486.
ROMAN LEGION XX ENCAMPMENT -- 10 a.m.-4 p.m. Saturday and Sunday. Costumed reenactors will demonstrate armor, war tactics and camp life. Marietta House Museum, 5626 Bell Station Road, Glenn Dale. Free. 301-464-5291.
COMMUNITY CENTER OPEN HOUSE -- 10 a.m.-4 p.m. Saturday. Class demonstrations, activities and tours of the renovated center. Prince George's Plaza Community Center, 6600 Adelphi Rd., Hyattsville. Free. 301-864-1611.
ICE RINK'S SEASONAL CELEBRATION -- 2-5 p.m. Saturday. The skating season gets underway with activities, skating demonstrations and free skating. Tucker Road Ice Rink, 1770 Tucker Rd., Fort Washington. Free. 301-265-1525.
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