“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.
Help with Homework, students from Paint Branch H. S. Honor Society help students with homework. 4 to 6 p.m. Thursdays and Tuesdays, Marilyn J. Praisner Branch Library, 14910 Old Columbia Pike, Burtonsville. Free. 240-773-9460.
“Silver Spring Transit Center: What Next?” a discussion with David Dise, director at the Department of General Services, on the transit hub. Sponsored by Montgomery County Taxpayers League. 7:30-9:30 p.m., County Council Office Building, 6th floor, 100 Maryland Ave., Rockville. Free. 301-320-5863.
Author appearance Peter Clark, a former economics professor at Duke University, will discuss his book, “The Death of East Prussia: War and Revenge in Germany’s Easternmost Province.” 7:30 p.m., Friendship Heights Village Center, 4433 S. Park Ave., Chevy Chase. Free, registration requested. 301-656-2797.
Native plant sale, a variety of nursery-propagated native wildflowers for yard and garden. 3 to 7 p.m. Friday, 10 a.m. to 3 p.m. Saturday and 1 to 3 p.m. Sunday. Black Hill Regional Park, 20926 Lake Ridge Dr., Boyds. 301-528-3484.
“Grease,” a student production of the popular musical. 7 p.m. Friday-Saturday, Springbrook High School, 201 Valley Brook Dr., Silver Spring. $10; For students with ID, $5. 301-989-5700 or www.springbrookarts.com.
Chamber music performances, amateur musicians (intermediate to advanced levels) are invited to play music in small ensembles. Music is provided or take your own. Meets Fridays. Sponsored by Montgomery County Chamber Music Society. Please call or e-mail before noon on Friday if you wish to play that night. 7:15-9:45 p.m., Living Faith Lutheran Church, 1605 Veirs Mill Rd., Rockville. 301-770-0041, www.mccms.org or email@example.com.
Comedy & Magic Society, appropriate for age 10 and older; exotic, strange, and amusingly interactive. The next performances will take place May 10 and 31. 8 p.m., Arts Barn, 311 Kent Square Rd., Gaithersburg. $15; For residents, $12. 301-258-6394 or www.gaithersburgmd.gov/RecXpress.
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 gardening 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.
4k Run/Walk and tot trot, the “Race to End Poverty” walk/run is sponsored by A Wider Circle, a nonprofit organization that provides basic items to families in need. Visit the Web site to register and for details. Check-in opens at 7:30 a.m. and the run begins at 9 a.m., Meadowbrook Park, 7901 Meadowbrook Lane, Chevy Chase. $20-33; Registration required. 301-608-3504 or www.awidercircle.org/therace.html.
“Community and Youth Engagement” forum, discussions on bullying, social networks’ effect on getting a job, and access to higher education. Sponsored by Delta Sigma Theta Sorority, Montgomery County Alumnae Chapter. 10 a.m.-2 p.m., Montgomery College, Theatre Arts Arena, 51 Mannakee St., Rockville. Free registration requested. 240-491-0275 or www.mcacdst.org/RaiseTheBar.
Train Day and Peony Celebration, for all ages; artwork, plant sales, model trains, caboose tours and interactive museum displays. 10 a.m., Gaithersburg Community Museum, 9 S. Summit Ave. Free. 301-258-6329 or www.gaithersburgmd.gov/museum.
Housing fair and Financial Fitness Day, homeowners assistance, foreclosure counseling, affordable housing information, credit reports, prizes and more. Sponsored by the Department of Housing and Community Affairs and the Housing Fair Planning Committee. 10 a.m.-3 p.m., Bohrer Park activity center, 506 S. Frederick Ave., Gaithersburg. Free. 240-777-3602 or montgomerycountymd.gov/DHCA.
Prescription Drug Take-Back and VIN Etching, Safely dispose of unused or expired prescriptions, over-the-counter medications and pet treatments. Visit the Web site for additional collection sites. Takoma Park Police Department and the Maryland Automobile Insurance Fund will also have a free VIN etching event in the parking lot in which your vehicle’s identification number is permanently etched into the glass panes. 10 a.m.-2 p.m., Takoma Park Municipal Building, 7500 Maple Ave. Free. 301-891-7142 or www.dea.gov.
Bilingual family story time, stories, songs and finger plays in English and Spanish. 10:30-11 a.m., Long Branch Library, 8800 Garland Ave., Silver Spring. Free. 240-777-0910.
Spin, Pop, Boom with Mad Science, for children ages 5 to 12 accompanied by an adult; a “mad scientist” defies gravity in this fun children’s science program. 11 a.m., Germantown Library, 19840 Century Blvd. Free, tickets required. 240-777-0110.
Spring festival and native plants sale, for all ages; woodland hikes, nature games and children’s crafts, exhibits, live animal show and a plant sale. 1-4 p.m., Croydon Creek Nature Center, 852 Avery Rd., Rockville. 240-314-8770 or www.rockvillemd.gov/croydoncreek.
Nursing Home Medicaid talk, staff from the Montgomery County Department of Health and Human Services will give a presentation on Nursing Home Medicaid, how it differs from Medicare and the applications process. A question-and-answer session will follow. 2 p.m., Long Branch Library, 8800 Garland Ave., Silver Spring. 240-777-0910.
“NIH Philharmonia’s Cornucopia,” the concert will include Copland’s “Fanfare for the Common Man,” Haydn’s Concerto for 2 Horns and Mahler’s Symphony No 1. 7:30 p.m., St. Elizabeth Catholic Church, 917 Montrose Rd., Rockville. Free. 240-888-6781 or www.nihphil.org.
The Teetotallers, Martin Hayes (fiddle and viola), Kevin Crawford (flute, whistles, and bodhran) and John Doyle (vocals, guitar, bouzouki, mandola) play traditional Irish music. 8 p.m., Cultural Arts Center at Silver Spring, 7995 Georgia Ave., Silver Spring. Tickets, $30; Seniors and children, $20; MC students and faculty, $15. 240-567-5775.
Tom Cunningham Orchestra, the 17-piece big band will perform “The Swingin’ Side of Genius: Duke Ellington, 1920s-1940s.” At 8 p.m., a free beginners swing dance lesson. Orchestra, 9 p.m.-midnight, Glen Echo Park, Spanish Ballroom, 7300 MacArthur Blvd., Glen Echo. $15; children 5 to13, $8; age 4 and younger, free. 301-634-2222.
Bethesda Central farmers market, 9 a.m.-1 p.m. Sundays, Elm Street between Wisconsin and Woodmont avenues, Bethesda.
Olney farmers and artists market, 10 a.m.-2 p.m. Sundays. Sandy Spring Museum, 17901 Bentley Rd. 202-257-5326 or www.olneyfarmersmarket.org.
“Paws in the Park,” a one-mile dog walk, festival, pet vendors and more. Proceeds will benefit the Montgomery County Humane Society. Noon, Bohrer Park at Summit Hall, picnic pavilion, 510 S. Frederick Ave., Gaithersburg. $20; per family, $35; registration required to walk. 240-401-8144, www.firstgiving.com/mchsmd or firstname.lastname@example.org.
Rockville Science Day, for all ages; hands-on experiments, launch rockets, program robots and more than 50 exhibitors. Noon to 5 p.m., Montgomery College, 51 Mannakee St., Rockville. Free. email@example.com.
African American book discussion, for adults; a discussion of Ta-Nehisi Coates’s book “The Beautiful Struggle: A Father, Two Sons, and an Unlikely Road to Manhood.” 3-5 p.m., Germantown Library, 19840 Century Blvd. Free. 240-777-0110.
Classical music concert benefit, the program will include Dvorak’s Symphony No. 8, a premiere of “Psalms,” by Washington-area composer Timothy Dusenbury, and other classical selections. Proceeds will benefit NIH charities. 4:30 p.m., Cedar Lane Unitarian Universalist Church, 9601 Cedar Lane, Bethesda. Free. 240-277-3480 or www.nihco.org.
League of Women Voters brown-bag dinner meeting, Sen. Richard S. Madaleno Jr. (D-Montgomery) and Del. Heather R. Mizeur (D-Montgomery) will give a legislative update on the 2013 General Assembly session. Drinks and dessert will be served. 6:15 p.m., Wheaton Library, 11701 Georgia Ave. Free. 240-777-0678.
Town Meeting, Sen. Brian E. Frosh (D-Montgomery) will talk about the 2013 General Assembly’s session and answer questions. 7 p.m., Bethesda Library, 7400 Arlington Rd. 240-777-0970.Parenting a teen workshop, for parents of children ages 13 to 18; PEP counselors give a presentation: “‘Like, Whatever’: Responding Effectively to Teen Attitude and Backtalk.” Sponsored by the Parent Encouragement Program. 7:30-9:30 p.m., PEP, 10100 Connecticut Ave., Kensington. $30, registration required. 301-929-8824 or www.pepparent.org.
Downloading e-books, one-on-one instruction on using your e-reader to download library books and audiobooks. Take your device and library card. 9-11 a.m, first-come first served, Quince Orchard Library, 15831 Quince Orchard Rd., Gaithersburg. Free. 240-777-0200.
Square dancing and lessons, new dancers welcome; come in casual dress. 7-10 p.m, North Chevy Chase Christian Church, 8814 Kensington Pkwy. $6. 301-587-5861 or www.gerrymanders.net.
Scrabble, friendly games for adults of all skill levels. Take your own board. 10 a.m.-noon., Marilyn J. Praisner Branch Library, 14910 Old Columbia Pike, Burtonsville. 240-773-9460.
Volunteers needed to make blankets, volunteers are needed between 10 a.m. and 9 p.m. to knit, crochet or quilt blankets for sick and needy children. Yarn and fabric provided. Sponsored by Montgomery County Association for Family and Community Education. 10 a.m., Montgomery County Office of the University of Maryland Extension, 18410 Muncaster Rd., Derwood. Call Pat for information or directions. 301-460-5451.
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; age 62 and over, $6. 301-767-3714.
Plant clinic, Terri Pitts and Pam Hosimer, master gardeners from the University of Maryland Extension program, will answer plant and gardening questions. Take samples for identification. 1-3 p.m., Poolesville Library, 19633 Fisher Ave. Free. 240-773-9550.
Chess, learn to play, or improve your skills. 3:30 p.m., Long Branch Library, 8800 Garland Ave., Silver Spring. Free. 240-777-0910.
Beginning Internet and computer basics, for adults; volunteers teach how to search using the library’s computers. 7 p.m., Damascus Library, 9701 Main St. Free, registration required. 240-773-9444.
Foreign policy discussion, the nonpartisan Foreign Policy Association gathers monthly to share ideas on foreign policy of the United States. 12:30 p.m., Potomac Library, 10101 Glenolden Dr. Free. 240-777-0690.
“American Impressionists at Giverny,” art historian Joan Hart gives a talk on American painters of the late 19th and early 20th century, including John Singer Sargent, Theodore Robinson, Lilla Cabot Perry and others who went to Giverny. 1:15 p.m., Holiday Park Multiservice Senior Center, 3950 Ferrara Dr., Wheaton. Free. 240-777-4999.
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