BOOK DISCUSSION, Jeffrey Archer's novel, "Sons of Fortune." 10 a.m., New Carrollton Library, 7414 Riverdale Rd., New Carrollton. Free. 301-459-6900.
SENIOR CENTER BID WHIST, for ages 55 and older. 12:30-3 p.m., Camp Springs Senior Center, 6420 Allentown Rd., Camp Springs. Free. 301-449-0490.
HYATTSVILLE SUMMER JAM, swing music by the Hula Monsters, games, face painting, a moon bounce and clowns; refreshments will be sold. 6:30-8:30 p.m., Hyattsville Municipal Building, 4310 Gallatin St. Free. 301-985-5020.
MATH SAT PREPARATION, class for ages 13-18. 8:30-10 a.m. Saturdays, through Oct. 15, Prince George's Sports & Learning Complex, 8001 Sheriff Rd., Landover. $225; nonresidents of Prince George's and Montgomery counties, $270; registration required. 301-583-2430 or www.pgsportsandlearn.com.
ROMAN LEGION REENACTMENT, reenactments of military life, weaponry and training. 9 a.m.-4 p.m. today and Sunday, Marietta House Museum, 5626 Bell Station Rd., Glenn Dale. Free. 301-464-5291.
KETTERING PARADE AND COMMUNITY DAY, entertainment, clowns, games, face painting, demonstrations, health displays, contests and vendors. Sponsored by the Kettering Civic Federation. 11 a.m.-8 p.m., Kettering Community Center, 11800 Chesterton Dr., Upper Marlboro. Free admission. 301-218-0258.
PERFORMING ARTS SHOWCASE, music, dancers, vocalists and a silent auction Performances by students from Northwestern High School, Hyattsville Middle School and Northwestern's Colours Performing Arts Program. 6-10 p.m., Northwestern High School, 7000 Adelphi Rd., Hyattsville. Admission is free; donations requested to benefit of the Pentagon Memorial Fund. 301-454-8388 or www.colours.org.
BOWIE FARMERS MARKET, vegetables, fruits, flowers and baked goods. 8 a.m.-noon, Gallant Fox Lane and Route 197, Bowie. Free. 301-809-3076.
GLENARDEN STORY AND CRAFT TIME, for ages 3-5. 1:30-2:30 p.m., Glenarden/Theresa Banks Complex, 8615 McLain Ave., Glenarden. $5; nonresidents of Prince George's and Montgomery counties, $6; registration required. 301-772-3151.
LAUREL NIGHT HIKE, a park ranger guides a walk with stops to listen for owls, frogs and other nocturnal creatures. 7-8:30 p.m., Patuxent Research Refuge, North Tract, Route 198, between the Baltimore-Washington Parkway and Route 32, Laurel. Free; registration required. 301-497-5887.
FORT WASHINGTON SCRABBLE GROUP, for players of all experience levels. 6-8 p.m., Coffee & Conversations, 12754 Old Fort Rd., Fort Washington. Free. 301-868-6360.
HILLCREST HEIGHTS CHESS CLUB, for all ages, tips from instructor Paul Yates. 6:30 p.m. Mondays, Hillcrest Heights Library, 2398 Iverson St., Hillcrest Heights. Free. 301-630-4900.
COMPUTER CLASSES, for people 60 and older, classes in the components of a computer system, computer games and maintenance. 9:30 a.m.-noon Tuesdays, through Oct. 18, Prince George's Sports & Learning Complex, 8001 Sheriff Rd., Landover. $40; nonresidents of Prince George's and Montgomery counties, $48. Registration required. 301-583-2430 or www.pgsportsandlearn.com.
HYATTSVILLE FARMERS MARKET, 2-6 p.m., Queens Chapel Town Center, rear parking lot, Queens Chapel Road and Hamilton Street, Hyattsville. Free. 301-627-0977.
BOOK DISCUSSION, for adults, Valerie Boyd's "Wrapped in Rainbows: The Life of Zora Neale Hurston." 7 p.m., Oxon Hill Library, 6200 Oxon Hill Rd., Oxon Hill. Free. 301-839-2400.
FIRE STATION BUILDING TOUR, meeting with the Brentwood mayor and Town Council for a tour of and discussion of how the former fire department building, now owned by the town, will be used. 7-9 p.m., at the facility, 3714 Utah Ave., Brentwood. Free. 301-641-3147.
AUTHOR APPEARANCE, Maurice Ashley discusses "Chess for Success," how a book about playing chess inspired him to focus on education using the game's techniques and strategies and to become an chess international grandmaster. 7 p.m., Hyattsville Library, 6530 Adelphi Rd., Hyattsville. Free. 301-985-4690.
ALL ABOUT GEESE, for ages 3-4, an interactive program of songs and stories. 10:30-11:30 a.m. and 1-2 p.m., National Wildlife Visitor Center, Powder Mill Road, between Baltimore-Washington Parkway and Route 197, Laurel. Free; registration required. 301-497-5887.
NATURE PROGRAM, Robert J. Griesbach, a plant research geneticist, discusses the "American Arboretum on the Mall in the 19th Century," at a meeting of the National Active and Retired Federal Employees, Chapter 1122. 1:30 p.m., New Carrollton Municipal Center, 6016 Princess Garden Pkwy., New Carrollton. Free. 301-937-7987.
CAMP SPRINGS CIVIC MEETING, representatives from Washington Gas will discuss gas leaks and repairs in the area; States Attorney Glen Ivey and police officials will discuss vehicle theft. Sponsored by the Camp Springs Civic Association. 7 p.m., Thurgood Marshall Middle School, 4909 Brinkley Rd., Camp Springs. Free. 301-449-9479.
GREENBELT FRIENDS OF THE LIBRARY, fundraising, volunteering and special projects. 7 p.m., Greenbelt Library, 11 Crescent Rd., Greenbelt. Free. 301-345-5800.
HILLCREST HEIGHTS STORY TIME, for ages 3-5. 10:30 a.m., Hillcrest Heights Library, 2398 Iverson St. Free. 301-630-4900.
BOWIE CRIME TALK, a police official discusses crime-fighting initiatives at a meeting of the National Active and Retired Federal Employees, Chapter 1747. Refreshments. 10 a.m., Bowie City Hall, 2514 Kenhill Dr., Room 204, Bowie. Free. 301-464-6372.
CERAMICS CLASSES, for beginners 16 and older, hand building, wheel throwing, wedging, centering, trimming and glazing techniques to make pottery. 7-10 p.m. Thursdays through Nov. 3, Montpelier Cultural Arts Center, 12826 Laurel-Bowie Rd., Laurel. $105; nonresidents of Prince George's and Montgomery counties, $125; additional fee for clay. Registration required. 301-953-1993.
-- Compiled by LISA MARTIN
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