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.