Correction: An earlier version of this post stated that the Smithsonian Folklife Festival would be concluding this coming Sunday. It concluded July 6. A new event has been selected in its place.
The Going Out Guide recommends free or low-cost things to do this week.
As part of its “Audrey: Her Life in Film” series, the National Theatre screens this classic 1961 Audrey Hepburn film, about a writer who falls for his glamorous, impulsive neighbor. Free tickets are distributed 30 minutes before the show.
6:30 p.m. National Theatre, 1321 Pennsylvania Ave. NW. 202-628-6161. www.nationaldc.org. Free tickets required.
Treat the kids to some science-y summertime fun with Mr. Molecule and his wacky, interactive, experiment-filled children’s program. Mr. Molecule is a favorite of educators for his fun, yet informative, sessions. Plus, he has been known to whip out a few puppets and magic tricks. Can’t go wrong there.
10:30 a.m. Wolf Trap Children’s Theatre-in-the-Woods, 1551 Trap Rd., Vienna. 703-255-1868. www.wolftrap.org. $10, free for children age 2 and younger.
Are you a fan of movie musicals and love to belt out your favorite songs? The Martin Luther King Jr. Memorial and Watha T. Daniel-Shaw libraries have just the ticket. The two libraries are hosting a “Summer Sing-a-long Series,” screenings of six movie musicals. This week's offering is “Chicago,” starring Renée Zellweger and Catherine Zeta-Jones.
6:30 p.m. Martin Luther King Jr. Memorial Library, 901 G St. NW. 202-727-0321. Dclibrary.org/mlk.
Pack a picnic and enjoy some tunes as this local band brings its blend of old-time country, swing and jazz to the Rockville Senior Center. The concert is part of Rockville’s Free for All in the Parks summer outdoor series, with performances every Thursday through July 24.
2 p.m. Rockville Senior Center, 1150 Carnation Dr., Rockville. 240-314-8682. www.rockvillemd.gov/arts.
Thinking about learning French? The Alliance Française is hosting a free, Bastille Day-themed open house complete with placement tests, wine and cheese, a DJ and mini-French lessons. And there’s an earlier open house from 3 to 5 p.m. that's just for children.
5:30 p.m. to 8 p.m. Alliance Française, 2142 Wyoming Ave. NW. 202-234-0125. www.francedc.org.
Keep the Fourth of July spirit going and celebrate the founding of Alexandria with an evening at Oronoco Bay Park. The festivities include fireworks, music from the Alexandria Symphony Orchestra and red, white and blue birthday cake.
7:30 to 10 p.m. Oronoco Bay Park, 100 Madison St., Alexandria. 703-746-4343. www.alexandriava.gov.
As part of a four-week program, young people ages 14 to 21 took courses in orchestral and chamber music. Hear them perform at the Kennedy Center joined by conductor Elizabeth Schulze and students of the Kennedy Center's Young Artists of Color national training initiative. Another concert takes place July 27.
6 p.m. Kennedy Center, Millennium Stage, 2700 F St. NW. 202-467-4600. www.kennedy-center.org.