“Ride the Riverside” fundraiser, registration is open for the June 8-9 bike ride to benefit the National Multiple Sclerosis Society. Routes are 30 miles to more than 100 miles over one or two days. Visit www.bikemsdc.org for details and registration information.
“Wings of Fancy,” the popular live butterfly and caterpillar exhibit is back. Open 10 a.m.-4 p.m. daily through Sept. 22. Brookside Gardens Conservatory, 1500 Glenallan Ave., Wheaton. $6; ages 3 to 12, $4. 301-962-1400.
“Accidental Architecture: Depictions of Demolition,” an exhibit by local photographer Julie Miller of demolition sites located mostly in Silver Spring, Rockville and the District. Open 1-4 p.m. Saturdays;1-8 p.m. Sundays through June 9. Glen Echo Park, Photoworks Gallery, 7300 MacArthur Blvd. Free. 301-634-2274 or email@example.com.
Volunteer scientists and engineers needed, in schools 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.
Fulks Corner farmers market, local produce, baked goods and more. 1-6 p.m. Gaithersburg farmers market, Fulks Corner Avenue at Route 355. 301-258-6350 or www.gaithersburgmd.gov/markets.
Help with homework, students from Paint Branch High School’s Honor Society help students with homework 4-6 p.m. Thursdays and Tuesdays. Marilyn J. Praisner Branch Library, 14910 Old Columbia Pike, Burtonsville. 240-773-9460.
“My Weedless Garden” talk, author Lee Reich offers a low-impact approach to planting and maintaining gardens. 6:30-8 p.m., Brookside Gardens, 1800 Glenallan Ave., Wheaton. Free. 301-962-1400.
Author talk, Richard Breitman, a historian and professor, will discuss “FDR and the Jews,” a book he wrote with Allan Lichtman. 7:30 p.m., Friendship Heights Village Center, 4433 S. Park Ave., Chevy Chase. Free, registration required. 301-656-2797.
Parenting workshop, for parents with or without their teens age 14 and older; counselors give a presentation, “Planning for Safe Teen Driving.” Sponsored by the Parent Encouragement Program. 7:30-9:30 p.m., PEP, 10100 Connecticut Ave., Kensington. $30; teens, $15. Registration required. 301-929-8824 or www.pepparent.org.
Bike to Work Day, food, drinks and giveaways. Visit the Web site for details and pit stop locations. Ride with a buddy. Sponsored by Commuter Connections and the Washington Area Bicyclist Association. 800-745-7433 or www.biketoworkmetrodc.com.
50+ Employment Expo, keynote speaker Maureen Bunyan, a WJLA-TV news broadcaster, will talk about reentering the job market. Recruiters, community resources, seminars and an Internet cafe. 10 a.m.-3 p.m., Bethesda North Marriott Hotel & Conference Center, 5701 Marinelli Rd. Free. 301-255-4231 or www.accessjca.org.
Contra dancing, George Marshall and Tim van Egmond call to Swallowtail, plus square dances and waltzes. Contra dance lesson at 7:30 p.m. followed by music until 11:30 p.m. 7:30-11:30 p.m., Glen Echo Park, bumper car pavilion, 7300 MacArthur Blvd. $10; 17 and younger, $5. 301-634-2222, www.fridaynightdance.org or firstname.lastname@example.org.
Pike Central farmers market, 9 a.m.-2 p.m, 11806 Rockville Pike (between Montrose and Old Georgetown roads), Rockville. 301-775-6402.
Plant clinics, Montgomery County Master Gardeners answer questions. Take plant specimens for identifying and diagnosing problems. 10 a.m.-1 p.m. Twinbrook Library, 202 Meadow Hall Dr., Rockville. Free. 240-777-0240. Also at the Marilyn J. Praisner Library in Fairland.
Upper Rock Creek bike eco-tour, sponsored by the North Bethesda Rotary Club and the Rock Creek Conservancy. The 13-mile (round trip) ride starts at Veirs Mill Park near Garrett Park and follows the Rock Creek Trail north to Lake Needwood. Proceeds will benefit the scholarship program of the North Bethesda Rotary Club. Veirs Mill Local Park, 4425 Garrett Park Rd., Wheaton. $15 includes a T-shirt and picnic lunch; registration required. 301-951-0789 or www.riverexplorer.com/rock_creek/rotary_bike_tour_2013.html.
Home Alone class, prepares students ages 8 to 11 to spend brief periods of time alone. Topics include answering the door and telephone, and calling 911. 9 a.m.-noon, MedStar Montgomery Medical Center, 18101 Prince Philip Dr., Olney. $35, registration required. 301-774-8881 or www.MedStarMontgomery.org/Classes.
Rockville farmers market, 9 a.m.-1 p.m, Route 28 and Monroe Street. A second farmers market on Montgomery Avenue will open June 5.
Truck Touch, for children of all ages; touch a fire truck, police car, digger, bucket truck, motorcycle, ambulance, cement mixer and other vehicles. Parking on S. Washington Street and in the City Hall lot. 10 a.m.-1 p.m., Christ Episcopal School, 22 W. Jefferson St., Rockville. $5; children under 2 , free. 301-424-8702.
Farmers and artists market, 10 a.m.-2 p.m. Farmers market at the Kentlands, 301 Main St. (Kentlands Main Street Pavilion), Gaithersburg. 301-258-6350 or www.gaithersburgmd.gov/markets.
Used book sale, sponsored by the Friends of the Aspen Hill Library. 10 a.m.-3 p.m., Aspen Hill Library, 4407 Aspen Hill Rd., Rockville. 301-871-1113 or email@example.com.
White Oak Middle School market, 10 a.m.-2 p.m., White Oak Middle School, 12201 New Hampshire Ave., Silver Spring. 301-989-5780.
Geology Walk, Great Falls to Mather Gorge, for age 10 and older; a two-mile walk from Great Falls overlook to Mather Gorge on the Potomac. Visit the Web site for details. 12:30-3:15 p.m., Great Falls Tavern and Visitor Center, 11710 MacArthur Blvd., Potomac. Walk is free. Cost for parking. Registration required. 240-FUN-8111 or rockvillesciencecenter.org.
Poolesville SpringFest, highlights of the third annual festival include live blues bands, beer, barbecue and children’s activities. 2-7 p.m., Whalen Commons, 19701 Fisher Ave., Poolesville. $20 includes admission, a glass and 12 tasting tickets for beer and wine. 301-428-8927 or www.poolesville.com/springfest.html.
Gaithersburg Community Chorus spring concerts, the 25th anniversary celebration concert will include Mozart’s “Requiem,” Schubert’s Mass in G Major and Mendelssohn’s “Elijah,” plus a specially commissioned piece, “Hineh Ma Tov,” by Chris Fraley. 7:30 p.m. Saturday and Sunday, St. John Neumann Catholic Church, 9000 Warfield Rd., Gaithersburg. Free; donations welcome. 301-258-6394.
Inaugural Poet Richard Blanco, a reading from his work “Looking for the Gulf Motel,” a collection of poems on being a gay man in Cuban American culture. Poet Dan Vera, author of “Speaking Wiri Wiri,” will join Blanco. A reception will follow. 7:30 p.m., The Writer’s Center, 4508 Walsh St., Bethesda. $15; For members, $10; for students and military, $5. Registration required. 301-654-8664 or www.writer.org/blanco.
Olney Days jazz concert, 7:30-9 p.m., Olney Manor Recreational Park, 16601 Georgia Ave. Free. 301-570-1210.
Washington Balalaika Society Orchestra, “Alive at Twenty-Five,” the orchestra’s 25th anniversary spring concert. 7:30 p.m., Bradley Hills Presbyterian Church, 6601 Bradley Blvd., Bethesda. $25; seniors, $20; students, $15; children age 11 and younger, free. 301-365-2850 or www.balalaika.org.
Bethesda Central farmers market, 9 a.m.-1 p.m., Elm Street between Wisconsin and Woodmont avenues, Bethesda.
Wheaton farmers market, 9 a.m.-1 p.m., between Georgia Avenue and Veirs Mill Road at 2425 Reedie Dr., Wheaton. 301-792-9448.
Burtonsville farmers market, 10 a.m.-2 p.m., 2410 Spencerville Rd. 301-792-9448.
Olney farmers and artists market, 10 a.m.-2 p.m., Sandy Spring Museum, 17901 Bentley Rd. 202-257-5326 or www.olneyfarmersmarket.org.
Morning film screening: “Declaration of War,” director Valerie Donzelli’s 2011 French drama about a young couple whose son receives a diagnosis of a brain tumor. Post-film discussion with Stan Levin. Sponsored by Cinema Art Bethesda. 9:30 a.m., Landmark’s Bethesda Row Cinema, 7235 Woodmont Ave. $15; includes post-screening discussion, coffee and bagels. 301-365-3679 or http://cinemaartbethesda.org.
Drivers Expo and Mobility Resource Fair, for older adults and their families. Sponsored by AARP Maryland. Noon-4 p.m., Asbury Methodist Village, 301 Odedhal Ave., Rosborough Center, Gaithersburg. Free. 877-926-8300 or http://aarp.cvent.com/mddriversymposium.
Bluebirds Forever festival, bluebird trail hikes, story time, games, music, crafts and presentations. Learn how to build and put up a bluebird box. 1-4 p.m., Black Hill Regional Park, 20926 Lake Ridge Dr., Boyds. Free. 301-528-3483 or www.BlackHillNature.org.
Takoma Park family day, for all ages; food, entertainment, live music and vendors. Sponsored by the Takoma Park Recreation Department. 1-5 p.m., Ed Wilhelm Field, behind Piney Branch Elementary School, 7510 Maple Ave. Free. 301-891-7290 or firstname.lastname@example.org.
Nanotechnology talk, for all ages; demonstrations and hands-on exhibits from the Rockville Science Center. A local scientist discusses the fast-growing field. 1:30-4:30 p.m., Twinbrook Community Recreation Center and Park, 12920 Twinbrook Pkwy., Rockville. Free. 240-386-8111, www.rockvillesciencecenter.org or email@example.com.
Jim Ritter and the Creole Gumbo Jazz Band, New Orleans-style traditional jazz. 2-5 p.m., Knights of Columbus Hall, 9707 Rosensteel Ave., Silver Spring. $25 at the door; Members and advance ticket purchase, $20; youths and students, free with ID. 703-323-0314 or www.prjc.org.
The Pilgrim Trio, improvisational jazz, classical, Latin and klezmer music. 2-4 p.m., Live and Learn Bethesda, 2nd Floor, 4805 Edgemoor Lane. $20, registration required. 301-740-6150 or www.liveandlearnbethesda.org.
Art history lecture, Alison Luchs, a National Gallery of Art curator will give a lecture, “Michelangelo’s David-Apollo: an offer he couldn’t refuse,” about the famous statue in Florence, Italy. 3 p.m., Friendship Heights Village Center, 4433 South Park Ave., Chevy Chase, MD. Free. 202-364-2526 or firstname.lastname@example.org.
Youth Orchestras at Strathmore, junior orchestras, 3 p.m.; 7 p.m., Chamber Orchestra and Philharmonic. Music Center at Strathmore, 5301 Tuckerman Lane, North Bethesda. $10-$20. 301-581-5100 or www.strathmore.org.
Argentine tango, beginners lessons at 6:30 p.m. followed by a Milonga; intermediate, 7:30 p.m. A DJ will play traditional and nuevo tango and some alternative. No partner required. Glen Echo Park, Ballroom Annex, 7300 MacArthur Blvd. Dance and beginners lesson, $15; Dance only, $10. 301-634-2222.
Choral Music Concert, featuring the NIH Community Chorus and the East Avenue Ensemble. Proceeds from donations will benefit NIH charities. 7:30 p.m., St. Mark Presbyterian Church, 10701 Old Georgetown Rd., Rockville. 240-277-3480 or www.nihco.org.
Cancer on the Job: Employee Rights, for anyone affected by cancer, attorney Bill Day will discuss the rights of cancer patients and what to expect when you seek benefits. 6-7:30 p.m., Hope Connections for Cancer Support, Beaumont House at FASEB, 9650 Rockville Pike, Bethesda. Free. 301-493-5002.
Mule-drawn canal boat rides, 11 a.m. and 3 p.m. Wednesdays, Thursdays and Fridays; 11 a.m.; 1:30 and 3 p.m. Saturdays and Sundays. C&O Canal National Park, 11710 MacArthur Blvd., Potomac. $8; for children 4 to 15, $5; for age 62 and over, $6. 301-767-3714.
“Unlocking Social Security Mysteries” workshop, Alexander Parris, a financial adviser and author, gives a lecture at this lunch-and-learn workshop. 11:30 a.m.-1 p.m., Live and Learn Bethesda, 4805 Edgemoor Lane. $12, registration required. 301-740-6150 or www.liveandlearnbethesda.org.
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.
Square dancing and lessons, new dancers welcome; come in casual dress. 7 to 10 p.m., North Chevy Chase Christian Church, 8814 Kensington Pkwy. $6. 301-587-5861 or www.gerrymanders.net.
Recreation trail project funding, the Maryland State Highway Administration is accepting applications for Recreational Trail funding. The program encourages the development of recreational trails and trail-related facilities; funding approved will be for the 2014 fiscal year. Visit the Web site for details and an application. Deadline to apply is July 1. St. Mark Presbyterian Church, 10701 Old Georgetown Rd., Rockville. 410-545-8640, http://roads.maryland.gov or email@example.com.
Public Works equipment show, meet City of Rockville public works staff members, see refuse and recycling trucks, earth-moving equipment and other machinery. In observance of May 20-24 as National Public Works Week. 11 a.m.-4:30 p.m., Rockville Municipal Swim Center, outdoor pool parking lot, 355 Martins Lane, Rockville. Free. 240-314-8500 or www.rockvillemd.gov/publicworks.
JohnStone reggae band, roots reggae music. Part of the downtown Bethesda weekly summer concert series. 7:30 p.m., Veterans Park, Woodmont and Norfolk avenues. Free. 301-215-6660 or www.bethesda.org.
Author appearance, Daniel Stashower will discuss his book “The Hour of Peril: The Secret Plot to Murder Lincoln Before the Civil War.” 7:30 p.m., Friendship Heights Village Center, 4433 S. Park Ave., Chevy Chase. Free, registration required. 301-656-2797.
Blues dance, beginners workshop at 8:15 p.m., followed by dancing until 11:30 p.m. 8:15-11:30 p.m., Glen Echo Park, Ballroom Annex, 7300 MacArthur Blvd. $8. 301-634-2222, www.capitalblues.org or firstname.lastname@example.org.
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.