HERNDON CHILDREN'S PERFORMANCE, Jill Klein Rone presents "The Ripple Effect," about water conservation, sponsored by the Herndon Women's Club, 10:30 a.m., Historic Town Hall Square, Lynn Street, next to the Red W&OD Caboose. Free. 703-435-6868.
RESTON FITNESS WORKSHOP, for seniors, focusing on stability and coordination; participants are asked to wear comfortable clothes and bring a water bottle, a small pillow and a blanket, 1-2 p.m., Reston Community Center at Lake Anne, 1609-A Washington Plaza. Free; registration required. 703-476-4500.
CONCERT, PHOTOGRAPHY SHOW, Andrew Acosta and the Old Time String Band, photography by Dee Ellison, 7 p.m., Cherry Hill Park, 312 Park Ave., Falls Church. Free. 703-248-5077.
RESTON TAKE A BREAK CONCERT, acoustic folk by October Skies, 7-9 p.m., Lake Anne Village Center, Washington Plaza, Reston. Free. 703-476-4500.
ANDEAN CONCERT, music by Yarawi, 7:30 p.m., Nottoway Park, 9601 Courthouse Rd., Vienna. Free. 703-324-7469.
HERNDON FOLK CONCERT, by Naked Blue, sponsored by the Herndon Women's Club, 7:30 p.m., Herndon Town Green, 777 Lynn St. Free. 703-435-6868.
FRANCONIA JAZZ CONCERT, by the Capital Focus Jazz Band, 7:30 p.m., Kingstowne Towne Center, 5955 Kingstowne Blvd., Franconia. Free. 703-922-9514.
ANNANDALE COUNTRY CONCERT, by the Navy Band's Country Current group, 7:30 p.m., Mason District Park, amphitheater, 6621 Columbia Pike, Annandale. Free. 703-324-7469.
SPRINGFIELD MEXICAN CONCERT, by Mariachi Los Amigos, 7:30 p.m., Lake Accotink Park, 7500 Accotink Park Rd., Springfield. Free. 703-425-9300.
FAIRFAX JAZZ CONCERT, performed by Project Natale, 7:30 p.m., Royal Lake Park, 5344 Gainsborough Dr., Fairfax. Free. 703-425-9300.
MCLEAN NATURE HIKE, led by the Northern Virginia Conservation Trust, 3.5-mile trail through Scott's Run Nature Preserve, part of the Potomac Gorge, home to more than 200 rare species of plants and animals. Participants are asked to wear sturdy shoes and bring water and sunblock, 8-11 a.m., meet at parking area on the north side of Georgetown Pike at Swinks Mill Road, McLean. $10; registration required. 703-354-5093.
ST. MICHAELS BUS TRIP, tour the Maryland town, eat a crab lunch and take a cruise to see historic and contemporary mansions; the day includes shopping and other sightseeing, 8 a.m.-9 p.m., bus departs from and returns to Reston Community Center, 2310 Colts Neck Rd., Reston. $90; people who live or work in Reston, $60; includes transportation, lunch, cruise tickets; registration required. 703-476-4500.
MORNING CANOE TRIP, for 16 and older, a tour guided by a Northern Virginia Regional Park Authority staff member to view wildlife, no experience necessary, 8 a.m.-noon, the park, 6501 Pohick Bay Dr., Lorton. $25; reservations required. 703-339-6104.
INTERNATIONAL PAPER MODELERS CONVENTION, a chance to meet the artists who turn paper into models of planes, trains, automobiles, castles, birds and ships; participants can learn techniques, see models and try building one, 10 a.m.-6 p.m., Days Hotel and Conference Center at Dulles, 2200 Centreville Rd., Herndon. Free. 703-620-9720.
CHANTILLY CIVIL WAR ENCAMPMENT, reenactors demonstrate drill practice, rifle firing and skirmishes; period games and live music, 10 a.m.-5 p.m. Saturday, 10 a.m.-4 p.m. Sunday, Sully Historic Site, 3601 Sully Rd., Chantilly. $6; seniors and children, $4. 703-437-1794.
ANNANDALE PUPPET SHOW, for children, by the Goodlife Theater, 10 a.m., Mason District Park, 6621 Columbia Pike, Annandale. Free. 703-324-7469.
FAIRFAX STATION MUSIC EDUCATION, for children, the Fairfax Symphony Brass Quintet demonstrates how valves, slides and tubing shape tones, 10 a.m., Burke Lake Park, 7315 Ox Rd., Fairfax Station. 703-323-6600.
CHANTILLY CHILDREN'S ENTERTAINMENT, juggling and comedy by Paul Hadfield, 10 a.m., Ellanor C. Lawrence Park, 5040 Walney Rd., Chantilly. Free. 703-631-0013.
RESTON MUSIC EDUCATION, for children, the Percussion Duo of the Fairfax Symphony demonstrates how percussion forms the rhythmic foundation of the orchestra, 10 a.m., Lake Fairfax Park, 1400 Lake Fairfax Dr., Reston. Free. 703-471-5415.
ANNANDALE PUPPET SHOW, Native American folk tales and Appalachian stories performed by the Backpack Puppets, 10 a.m., Mason District Park, 6621 Columbia Pike, Annandale. Free. 703-941-1730.
VIENNA GARDEN WORKSHOP, atrium horticulturist Tammy Burke helps visitors create leaf-imprinted stepping stones for the garden, 10 a.m., Meadowlark Botanical Gardens, 9750 Meadowlark Gardens Ct., Vienna. $10; reservations required. 703-255-3631.
POHICK BAY EVENING CANOE TOUR, for 18 and older, with Northern Virginia Regional Park Authority staff members, 6:30-9:30 p.m., Pohick Bay Regional Park, 6501 Pohick Bay Dr., Lorton. $25; reservations required. 703-339-6104.
MCLEAN PARK JAZZ CONCERT, by the Navy Commodores, 3 p.m., McLean Central Park, Old Dominion Drive and Dolley Madison Boulevard. Free. 703-790-0123.
VIENNA COMMUNITY BAND CONCERT, 7 p.m., grounds of the Vienna Community Center, 120 Cherry St. SE. Free. 703-281-4077.
ANNANDALE ORCHESTRA CONCERT, with Erika Ovette singing songs by George Gershwin, Duke Ellington and Richard Rodgers, 7:30 p.m., Mason District Park, 6621 Columbia Pike, Annandale. Free. 703-324-7469.
FAIRFAX COUNTY BOARD MEETING, 9:30 a.m., Fairfax County Government Center, Board Auditorium, 12000 Government Center Pkwy. 703-324-3151.
HOOTIE AND THE BLOWFISH, concert, 8 p.m., Wolf Trap, Filene Center, 1551 Trap Rd., Vienna. In-house, $36; lawn, $25. Tickets, 703-218-6500; information, 703-255-1860.
FAIRFAX CITY COUNCIL MEETING, 7 p.m., Fairfax City Hall, 10455 Armstrong St. 703-385-7935.
HERNDON ENGLISH COUNTRY DANCING, no partner necessary, all dances taught by leader Barbara Harding, with guitar and concertina accompaniment, 7:45 p.m., Harding Hall, 730 Jackson St., Herndon. $3. 703-437-3615.
ANI DIFRANCO CONCERT, 8 p.m., Wolf Trap, Filene Center, 1551 Trap Rd., Vienna. In-house, $34; lawn, $26. Tickets, 703-218-6500; information, 703-255-1860.
FRANCONIA LATIN CONCERT, by Pablo Antonio y La Firma, 7:30 p.m., Lee District Park, 6601 Telegraph Rd., Franconia. Free. 703-971-6262.
ANNANDALE BLUES CONCERT, Tom Principato Band, 7:30 p.m., Mason District Park, amphitheater, 6621 Columbia Pike, Annandale. Free. 703-324-7469.
LYLE LOVETT CONCERT, 8 p.m., Wolf Trap, Filene Center, 1551 Trap Rd., Vienna. In-house, $38; lawn, $22. Tickets, 703-218-6500; information, 703-255-1860.
HERNDON CHILDREN'S PERFORMANCE, Reptile World shows Banana, a yellow and white python, sponsored by the Herndon Parks and Recreation Department, 10:30 a.m., Historic Town Hall Square, Lynn Street, next to the Red W&OD Caboose. Free. 703-435-6868.
RESTON SENIORS BOOK DISCUSSION, for 55 and older, Bookends group discusses "Reading Lolita in Tehran: A Memoir in Books," by Azar Nafisi, bring a bag lunch, drinks and cookies provided, 12:30-2 p.m., Reston Community Center, 2310 Colts Neck Rd. Free. 703-476-4500.
FAIRFAX CHILDREN'S CONCERT, the Veggie Tales Rockin' Tour, with audience participation, silly songs, video and a light show, 1 and 7 p.m., George Mason University, Patriot Center, Fairfax City. $25.50, $21.50, $14.50. 703-573-7328 or www.ticketmaster.com.
CONCERT, ART EXHIBIT, music by Free Radicals, with John and Tamara Ballou, and sculpture by Marc Robarge, 7 p.m., Cherry Hill Park, 312 Park Ave., Falls Church. Free. 703-248-5077.
RESTON TAKE A BREAK CONCERT, contemporary jazz by Never Alone, 7-9 p.m., Lake Anne Village Center,M Washington Plaza, Reston. Free. 703-476-4500.
VIENNA FOLK CONCERT, by John McCutcheon, 7:30 p.m., Nottoway Park, 9601 Courthouse Rd., Vienna. Free. 703-324-7469.
NSO, GALWAY CONCERT, National Symphony Orchestra performs with flutist James Galway, 8:15 p.m., Wolf Trap, Filene Center, 1551 Trap Rd., Vienna. In-house, $42, $36, $30; lawn, $18. Tickets, 703-218-6500; information, 703-255-1860.
-- Compiled by JEAN MACK
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