NATTY NATION -- 7-8:30 p.m. Thursday. Roots reggae group performs as part of "Concerts in the Park!" Watkins Regional Park, 301 Watkins Park Dr., Upper Marlboro. Free. 301-218-6700.

ALMOST RECESS -- 7:30-9:30 p.m. Friday. Local band performs popular, rock and rhythm and blues music as part of the 25th Annual Montpelier Summer Concert Series. Montpelier Mansion Grounds, Route 197 at Montpelier Dr., Laurel. Free. 301-776-2805.

HARDWAY CONNECTION BAND -- 7:15 p.m. Wednesday. Soul and blues music in an outdoor setting. Stephen Decatur Community Center, 8200 Pinewood Dr., Clinton. Free. 301-297-4648.

For Children

TRACKS & SCATS WORKSHOP -- 10-11:30 a.m. Friday. Ages 6-12 learn to identify animals by the signs they leave behind. Clearwater Nature Center, 11000 Thrift Rd., Clinton. $4. Reservations, 301-297-4575.

OUT-OF-SCHOOL SUMMER JAM -- 3-6 p.m. Saturday. Ages 10-12 enjoy music, games and treats. Temple Hills Community Center, 5300 Temple Hill Rd. $3. 301-894-6616.

KIDDIE KRAFTS -- 1-3 p.m. Sunday. Ages 6-12 make crafts. South Bowie Community Center, 1717 Pittsfield Lane, Bowie. $6. 301-249-1622.

NATURALLY FUN GAMES -- 10-11:30 a.m. Monday. Ages 6-10 play games while learning fun, fascinating facts about nature. Clearwater Nature Center, 11000 Thrift Rd., Clinton. $3. Reservations, 301-297-4575.

Theater and Dance

"MAME" -- 8 p.m. Fridays and Saturdays. 2nd Star Productions presents a story about an adventurous aunt in the 1920s who becomes the guardian for her 10-year-old nephew. Bowie Playhouse, White Marsh Park, 6314 Crain Hwy., Bowie. $16; students and seniors, $13. 301-858-7245.

Lectures and Literature

A. VAN JORDAN -- 2 p.m. Saturday. Author reads from "MacNolia: Poems," a book about MacNolia Cox, who in 1936 became the first African American finalist in the National Spelling Bee Competition. Karibu Books, Prince George's Plaza Mall, 3500 East/West Hwy., Hyattsville. Free. 301-559-1140.

Sports and Recreation

DEEP-WATER WALKING -- 7-8:30 p.m. Tuesdays and Thursdays. Pool workout for ages 18 and older. Glenarden/Theresa Banks Complex, 8615-A McLain Ave., Glenarden. $6. 301-772-5515.

ANACOSTIA RIVER BOAT TOURS -- Noon-12:45 p.m. Tuesdays, Thursdays and Saturdays; 7-7:45 p.m. Sundays. A guided tour aboard a pontoon to search for birds and other wildlife. Bladensburg Waterfront Park, 4601 Annapolis Rd., Bladensburg. Free. 301-779-0371.

BICYCLE NATURE TOUR -- 9-11 a.m. Saturday. Ages 8 and older bring their mountain bicycles and helmets for a guided tour of park trails. Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. $3. Reservations, 301-627-6074.

CANOE TOUR -- 9-11 a.m. Saturday. Guided canoe trip on Lake Artemesia for all ages. Meet at Mount Rainier Nature & Recreation Center, 4701 31st Pl., Mount Rainier. $8. Reservations, 301-927-2163.

FAMILY DISCOVERY HIKE -- 10-11 a.m. Saturday. Naturalist-led hike for ages 4 and older. Watkins Nature Center, 301 Watkins Park Dr., Upper Marlboro. $2. 301-218-6702.

AFRICAN/CARIBBEAN DANCE WORKOUT -- 10-11:15 a.m. Saturdays. An intense workout for ages 16 and older. Mount Rainier Nature and Recreation Center, 4701 31st Pl., Mount Rainier. $7. 301-927-2163.

CHESAPEAKE BAY CRITICAL-AREA DRIVING TOUR -- 10 a.m.-3 p.m. Sundays. A self-guided, four-mile driving tour with interpretive stops, including an observation tower and a timber bridge over scenic wetlands. Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. Free. 301-627-6074.

DROP-IN WATER AEROBICS -- 7:30 p.m. Tuesday. Low-impact water aerobics exercise class. Ellen Linson Swimming Pool, 5211 Paint Branch Pkwy., College Park. $7. 301-277-3717.


"UNDERWATER PHOTOGRAPHS" -- Through Wednesday. Artists reception from 7-9 p.m. on Sunday. Photographs by Karan Temple True taken underwater in Bonaire, one of the islands in the Netherlands Antilles. New Deal Cafe, 113 Centerway, Greenbelt. Free. 301-474-5642.

"NORMANDY PORTRAITS" -- Through Aug. 21. Photographs and personal histories commemorating the 60th anniversary of the Normandy Invasion. Montpelier Cultural Arts Center, 12826 Laurel-Bowie Rd., Laurel. Free. 301-953-1993.

"THROUGH A PINHOLE, CLEARLY" -- Monday through Aug. 28. Group exhibit by photographers who use the diverse possibilities of the pinhole camera. Main Gallery, Harmony Hall Regional Center/John Addison Concert Hall, 10701 Livingston Rd., Fort Washington. Free. 301-203-6070.

"THIS FAIR LADY: THE LIFE OF LETTICE LEE" -- Through Sept. 26. Exhibit and artifacts from Lee, who lived at Darnall's Chance between 1748 and 1776. Darnall's Chance House Museum, 14800 Gov. Oden Bowie Dr., Upper Marlboro. Admission is $3, seniors $2, ages 5-18 $1. 301-952-8010.

"GETTING OUT THE VOTE: THE POLITICAL SCENE IN THE 1800s" -- Through November. Political memorabilia. Surratt House Museum, 9118 Brandywine Rd., Clinton. Admission is $3, seniors $2, ages 5-18 $1. 301-868-1121.

"PLEASE BE SEATED" -- Ongoing. 19th-century chairs, sofas, stools and benches from the Riversdale House Museum's permanent collection. 4811 Riverdale Rd., Riverdale. Admission is $3, seniors $2, ages 5-18 $1. 301-864-0420.

"SSS . . . WHEN THE IRON WAS HOT: AFRICAN-AMERICAN IRONWORKERS IN LAUREL/MUIRKIRK 1730-1930" -- Through March 2005. Exhibition examines the contribution of black ironworkers in Laurel. Montpelier Mansion, Route 197 and Muirkirk Rd., Laurel. Admission is $3, seniors $2, ages 5-18 $1. 301-953-1376.

"LIVING THE HEALTHY LIFE: SPORTS, HEALTH AND FITNESS IN THE NEW DEAL ERA" -- Ongoing. The development of health and fitness awareness through sports, government, city planning and daily life in the 1930s and 1940s. Greenbelt Museum, 15 Crescent Rd. 301-507-6582.

RADIO PREMIUMS -- Ongoing. Memorabilia related to radio serials of the 1930s, '40s and '50s, 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. Includes 20 photographs chronicling the war, from growing tension during the late 1940s through signing of the armistice in 1953. National Archives at College Park, 8601 Adelphi Rd. Free. 301-713-6800.


SOUTHERN MARYLAND HORSE ASSOCIATION SHOW -- 8 a.m. Saturday and Sunday. A hunter/jumper horse show in the outdoor rings. The Prince George's Equestrian Center, 14900 Pennsylvania Ave., Upper Marlboro. Free. 301-952-7999.

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