Mah-jongg tournament registration, the five-round competition Aug. 1 will be governed in accordance with the National Mah Jongg League. Proceeds will benefit the Benevolent Care Fund. The deadline to register is July 19. Erickson Living: Riderwood, Montgomery Station Clubhouse , 3140 Gracefield Rd., Silver Spring. $40 includes registration, lunch and prizes. 301-586-8152. Mail registration check payable to: Ms. Spector, c/o Riderwood, 3148 Gracefield Road, Apt. T-25, Silver Spring, Md. 20904.
Red Cross seeks youth volunteers, to greet donors, provide reading materials and offer refreshments. Hours are flexible, and training is provided. 800-272-0094, Ext. 1 or TerryAnn.Karloff@redcross.org.
STEM volunteers, scientists and engineers are needed in schools for grades K-12 to assist science and engineering teachers. The STEM volunteer program is sponsored by the American Association for the Advancement of Science Senior Scientists and Engineers. 301-570-2811 or www.seniorscientist.org.
SIGN-a-long Sing-a-long, storyteller Kathy MacMillan teaches American Sign Language through music and stories. Part of the Thursday morning summer kids programs. 10:30 a.m., Gaithersburg City Hall, Concert Pavilion, 31 S. Summit Ave. Free. 301-258-6350 or www.gaithersburgmd.gov/onstage.
Fulks Corner farmers market, locally grown produce, baked goods and more. 1-6 p.m., Fulks Corner Avenue at Route 355, Gaithersburg. 301-258-6350 or www.gaithersburgmd.gov/markets.
Music lecture and listening program, music historian Irv Chamberlain talks about “Duets: Double the Pleasure” and plays music of famous duos, including the Everly Brothers, Kenny Rodgers and Dolly Parton and others. 1:15 p.m., Holiday Park Multiservice Senior Center, 3950 Ferrara Dr., Wheaton. Free. 240-777-4999.
“Evenings in Olde Towne,” a new weekly summer concert series. The first featured performer is guitarist Seamus Kennedy, who engages audiences with traditional Irish music, classic country & western, American standards and Scottish ballads. Take a blanket or low-back chair for lawn seating. Visit the Web site for a list of performances. 5 p.m., Gaithersburg City Hall, Concert Pavilion, 31 S. Summit Ave. Free. 301-258-6350 or www.gaithersburgmd.gov/onstage.
Montgomery College information session, for prospective students; information tables open at 5 p.m. and breakout sessions begin at 6 p.m. Montgomery College, Campus Center cafeteria, 51 Mannakee St., Rockville. Free. 240-567-1759 or email@example.com.
David Andrew Smith , the guitarist performs outdoors on the plaza. Part of the Fair Hill summer concerts. 6 p.m., Fair Hill, 18169 Town Center Dr., Olney. Free. 240-453-3000 or firstname.lastname@example.org.
GreenWheaton anniversary gala, appetizers, refreshments, wine and beer, green vendors, and door prizes. 6-9 p.m., Brookside Gardens, 1800 Glenallan Ave., Wheaton. Tickets, $30. 301-946-5091, www. greenwheatongala2013.eventbrite.com or email@example.com.
Bats and Beavers Pontoon Boat Cruise, for age 6 and older; a naturalist will point out beaver lodges, feeding sites and (hopefully) beavers on this sunset cruise. Meet at the pontoon boat dock located by the boat rental area. 7:30-9 p.m., Black Hill Regional Park, 20926 Lake Ridge Dr., Boyds. $6; Registration required. 301-528-3492 or parkpass.org.
QuinTango performs, part of the Glen Echo Park weekly summer concerts. The historic Dentzel carousel will operate during the concerts, dancing in the Pavilion, and food will be available for purchase in the cafe. 7:30 p.m., Glen Echo Park, bumper car pavilion, 7300 MacArthur Blvd. Concert, free; carousel ride, $1.25. 301-634-2222.
Wes Tucker & the Skillets, band performs a variety of styles from funk to groove-based R&B to soulful jam-based ballads. Part of the downtown Bethesda summer concert series. 7:30 p.m., Veterans Park, Woodmont and Norfolk avenues. Free. 301-215-6660 or www.bethesda.org.
Low-vision aids summer sale, the Low Vision Center, a nonprofit organization, has moved. The LVC will provide demonstrations of visual aids, magnifiers, lighting and closed-caption televisions by appointment through July 12. Low Vision Center, 4905 Del Ray Ave., Suite 504, Bethesda. To make an appointment, call 301-951-4444.
Dance Club Friday, music by the John Brown Band and Dolly Bennof. Refreshments will be served. 1:15 p.m., Holiday Park Multiservice Senior Center, 3950 Ferrara Dr., Wheaton. $5; HPSI member with card, $3. 240-777-4999.
Cajun music, the Crawdaddies perform, 6:30 p.m., Rockville Town Square, 200 E. Middle Lane. Free. 202-248-5843.
Heritage Montgomery Celebration, the annual two-day, county-wide festival celebrates the history and culture of Montgomery County. Visit the Web site for program details; included are guided walks, historical lectures, reenactments, demonstrations, live music and more. 301-515-0753 or www.heritagemontgomery.org.
Free rides on White’s Ferry, the cable ferry crosses the Potomac every 20 minutes, a short distance downriver from White’s Ford, where J.E.B. Stuart’s cavalry crossed in the Civil War. Rides on the ferry are free for foot traffic. 10 a.m.-4 p.m., Saturday and Sunday, White’s Ferry, 24801 Whites Ferry Rd., Dickerson. 301-349-5200.
Kensington farmers market, 8 a.m.-noon. Kensington train station parking lot (Howard Avenue). 301-949-2424.
Pike Central farmers market, 9 a.m.-2 p.m., 11806 Rockville Pike (between Montrose and Old Georgetown roads), Rockville. 301-775-6402.
“Grow It, Eat It” open house, summer vegetable gardening, growing grapes and making wine, fall and winter vegetable planting, information on pests and diseases and tours of the demonstration garden. Plants will be available for purchase. Sponsored by the Montgomery County Master Gardeners. 8:30 a.m.-1 p.m., University of Maryland Extension Office, 18410 Muncaster Rd., Derwood. Free. 301-590-9650. or www.extension.umd.edu/growit .
Olney Classy Crafts and antiques market, crafts, antiques, collectibles, music and food. 9 a.m.-1 p.m. Sandy Spring Museum, 17901 Bentley Rd. Free. 301-774-0022.
Rockville farmers market, 9 a.m.-1 p.m, Route 28 and Monroe Street. www.rockvillemd.gov .
Kentlands farmers and artists market, 10 a.m.- 2 p.m., 301 Main St. (Kentlands Main Street Pavilion), Gaithersburg. 301-258-6350 or www.gaithersburgmd.gov/markets.
Gaithersburg Latitude Observatory tours, self-guided tours of the restored building and history park. 10 a.m., Gaithersburg Latitude Observatory, 100 De Sellum Ave. Free. 301-258-6160 or www.heritagemontgomery.org.
MOOseum history day, milk a model cow, live animals, crafts, demonstrations, children’s activities and more. 10 a.m., MOOseum, 17920 Germantown Park Dr., Germantown. Free. 301-704-3047.
Rockville history lectures, three lectures, sponsored by Peerless Rockville. At 10 a.m., a lecture on the Smithsonian’s newest museum, the National Museum of African American History and Culture. At noon, a talk, “Emancipation Proclamation at 150,” and at 2 p.m., a lecture, “J.E.B. Stuart’s ‘Wild Ride’ Through Montgomery County — June 1863.” Part of the Heritage Montgomery programs. Peerless Rockville, Red Brick Courthouse, 29 Courthouse Square. Free. www.peerlessrockville.org.
White Oak Middle School market, 10 a.m.-2 p.m. Saturdays, White Oak Middle School, 12201 New Hampshire Ave., Silver Spring. 301-989-5780.
“Dr. Seuss’s Cat In the Hat,” a theater presentation of the classic children’s story about a mischievous cat who pays a visit to two children while their mother is out. 11 a.m., 2 and 4:30 p.m. Saturdays-Sundays, 10:30 a.m. Mondays, Glen Echo Park, Adventure Theatre MTC, 7300 MacArthur Blvd., Glen Echo. $19. 301-634-2270.
“On the Ball Spinny,” for age 5 and older accompanied by an adult; Spencer “Spinny” Johnson, a trick basketball player, uses his basketball skills to teach the importance of respect, education, and perseverance. 11 a.m., Chevy Chase Library, 8005 Connecticut Ave. Free. 240-773-9590.
Civil War Comes to Rockville, reenactments of Civil War camp life. Dr. Stonestreet, a Civil War-era surgeon, will hold “office hours,” crafts demonstrations, live music and more. 11 a.m.-5 p.m., Beall-Dawson House, 103 W. Montgomery Ave., Rockville. Free. 301-762-1492 or www.heritagemontgomery.org.
Clarksburg Day, tour the 1909 schoolhouse and Dowden’s Ordinary Park. Live music, children’s activities, and more. 11 a.m., Downtown Clarksburg, Frederick Rd. Free. 301-916-3899.
Glen Echo Park Celebrates, the 80th anniversary of the historic Spanish Ballroom includes free dance lessons, a family dance for parents and children age 3 and older, crafts, ballroom tours, and an historical exhibition. 11:30 a.m.-5 p.m., Glen Echo Park, Spanish Ballroom, 7300 MacArthur Blvd. Free. 301-634-2222.
Civil War-era music, in period attire. Doug Jimerson will perform early American and Civil War-era music. Guests may tour the restored lockhouse (circa 1840.) Part of the week-long Heritage Montgomery programs. Noon, Edward’s Ferry, C&O Canal at Edward's Ferry Road, Poolesville. Free. www.heritagemontgomery.org.
United Way “Shoe Box Project,” take a shoe box to decorate and take donations of personal care or emergency items for the United Way “2013 Shoe Box Project” benefiting veterans, disconnected youth and the homeless. Decorating materials provided. Visit the Web site or call for details. Noon-2 p.m., Concord-St. Andrews Church, 5910 Goldsboro Rd., Bethesda. 301-229-5225 or csachurch.org.
Bethesda central farmers market, 9 a.m.-1 p.m., 7600 Arlington Ave., Bethesda.
Olney farmers and artists market, 9 a.m.-1 p.m., 2801 Olney-Sandy Spring Rd. (Olney-Sandy Spring Road and Prince Philip Drive). 202-257-5326.
Wheaton farmers market, 9 a.m.-1 p.m., between Georgia Avenue and Veirs Mill Road, 2425 Reedie Dr. 301-792-9448.
Burtonsville farmers market, 10 a.m.-2 p.m., 2410 Spencerville Rd. 301-792-9448.
“DIY Children’s Fair,” hands-on activities that combine old and new technology include weaving on a Hula Hoop loom; seeing how far a pig can fly; and making stomp rockets with NASA scientists. Sponsored by the Sandy Spring and the KID museums. Noon-4 p.m., Sandy Spring Museum, 17901 Bentley Rd. Free. 301-774-0022.
Photography exhibit opening and reception, by local photographers Robert Asura, Phil Fabrizio, and Beamie Young. 1:30 p.m., Glenview Mansion, 603 Edmonston Dr., Rockville. Free. 240-314-8682 or 240-314-8660. Through July 29.
Blues guitarist James Mabry, part of the Sunday afternoon concerts in the conservatory. 2-3 p.m., Glenview Mansion, 603 Edmonston Dr., Rockville. Free. 240-314-8682.
Sandy Spring Village walking tour, an hour-long guided walking tour of 19th- and 20th-century historic structures, local Quaker and African American history. Part of the (Sunday only) Heritage Montgomery programs. 2:30 p.m., Sandy Spring Museum, Meet in parking lot, 17901 Bentley Rd. Free. 240-351-5096 or www.heritagemontgomery.org.
Sunday Afternoon Waltz, ensemble Trio con Brio plays folk waltzes and other couple dances. At 2:45 p.m., an introductory waltz workshop, followed by dancing until 6 p.m. Glen Echo Park, Spanish Ballroom, 7300 MacArthur Blvd., Glen Echo. $10. 202-238-0230 or www.glenechopark.org/social-dances.
Historic Rockville Cemetery Tour, a one-hour walk to “meet” Civil War soldiers, Union and Confederate, and civilians of that time buried here. Park in or near the cemetery or at Civic Center Park. Meet near the caretaker’s cottage. 3:30 p.m., Rockville Cemetery, 1350 Baltimore Rd. Free, registration required. 301-340-2825 or www.heritagemontgomery.org.
Recreation trail project funding deadline, Monday is the deadline to submit an application to the Maryland State Highway Administration for recreational trail funding. The program encourages the development of recreational trails and trail-related facilities; funding approved will be for fiscal 2014. Visit the Web site for details and an application. St. Mark Presbyterian Church, 10701 Old Georgetown Rd., Rockville. 410-545-8640, http://roads.maryland.gov or firstname.lastname@example.org.
Summer reading help, for students ages 5 to 18 who struggle with reading; a volunteer from the “Grandreaders” literacy program will be matched with students. Take a favorite book or borrow one from the library. Sponsored by the nonprofit organization Interages, which works to connect generations and cultures. 10:30 a.m., Wheaton Library, 11701 Georgia Ave. Free. 240-777-0678.
Downtown Rockville farmers market, fresh produce, local vendors, live music. 11 a.m.-2 p.m., Rockville Town Center at Monroe Street and East Montgomery Avenue.
Shady Grove farmers market, noon-6 p.m., Johns Hopkins University, 9601 Medical Center Dr. (corner of Key West Avenue and Broschart Road), Rockville. 301-792-9448.
Movies on the Square, catch a free movie on the outdoor square at dusk. Bring a blanket or lawn chairs. No coolers or outside food permitted. The scheduled feature is “Life of Pi.” 8:45 p.m., Rockville Town Center, Maryland Avenue and E. Middle Lane, Rockville. 240-314-8620 or rockvilletownsquare.com.
Concert: Heather Renee, the indie folk-pop artists performs outdoors on the plaza. Part of the Fair Hill summer concerts. 6 p.m., Fair Hill, 18169 Town Center Dr., Olney. Free. 240-453-3000 or email@example.com.
Picnic, Play and Parade Watch, sponsored by Takoma Plays. 9 a.m.-noon, the Play Lady’s house, 7301 Maple Ave., Takoma Park. Free. 301-928-9962 or firstname.lastname@example.org.
Gaithersburg fireworks, walk in at Chestnut or Dalamar streets; the Perry Parkway entrance will be closed. Gates open at 5 p.m., concert at 7:30 p.m., fireworks at dusk (approximately 9:25 p.m.). Food will be available for purchase. No alcoholic beverages or glass containers. Montgomery County Fairgrounds, 16 Chestnut St., Gaithersburg. Free. 301-963-3247.
Poolesville fireworks, live music at 6 p.m., fireworks at dusk. Poolesville Polo Grounds, 14660 Hughes Rd. $5 per vehicle. 301-972-8888.
Rockville Fourth of July celebration, 7 p.m. live entertainment followed by 9:15 p.m. fireworks. Take blankets and chairs. Limited seating available. Montgomery College, 51 Mannakee St., Rockville. Free.
Kensington/Wheaton fireworks, live music at 7:30 p.m. followed by fireworks show at dusk (approx. 9:15 p.m.). Albert Einstein High School, 11135 Newport Mill Rd., Kensington. Free. 301-929-2200.
Fourth of July SoberRide program, for local residents age 21 and older; free cab rides (up to a $30 fare) will be offered to drivers throughout the county. 10 p.m. -4 a.m. Sponsored by the Washington Regional Alcohol Program. 1-800-200-TAXI or visit www.soberride.com. AT&T wireless customers can dial #WRAP.
Mail: Community calendar, Montgomery Local Living, The Washington Post, 51 Monroe St., Suite 500, Rockville, Md. 20850
Details: Announcements are accepted from public and nonprofit organizations, and must be received at least 14 days before the Thursday publication date. Include dates, times, exact address, prices and a publishable contact phone number.