- Children ages 2 to 5 and their parents have a chance to explore Hillwood through art projects and hunting for hidden gems in the “Treasure Quest” preschool series. 10:30 to 11:15 a.m. $12 per class for a child and one accompanying adult; $10 for members. Hillwood Estate, 4155 Linnean Ave. NW. 202-686-5807.
- At “Dumbarton Detectives,” homeschooled students ages 5 to 12 are invited to investigate the 200-year history of Dumbarton House, learn how to conserve historic objects and make plaster casts. This program includes a snack and museum tour. 1 to 3 p.m. $7 per student; $3 per adult. Dumbarton House, 2715 Q St. NW. 202-337-2288.
- The instrumental music, vocal music and dance departments of Duke Ellington School of the Arts, a premier arts school in Georgetown, will showcase their work through a collaborative performative experience. 6 p.m. Free. Millennium Stage, Kennedy Center. 202-467-4600.
- The Washington Bach Consort will present Andrew Fouts on the violin and Leon Schelhase on the harpsichord to play a selection of Bach’s sonatas and partitas. 6:30 to 8:30 p.m. $35 for seats; $15 for standing room tickets. Heurich House Museum, 1307 New Hampshire Ave. NW. 202-429-1894.
- Renowned percussionist Michael Burritt will join the Air Force Concert Band for a performance in their Guest Artist Series. 8 to 9:30 p.m. Free; Tickets required. Rachel M. Schlesinger Concert Hall and Arts Center, 4915 E. Campus Drive, Alexandria. Usafband.eventbrite.com.
Classes and workshops
- “Cook Sisters” Adrienne and Danielle Cook will hold a “Connect to Your Roots” cooking demonstration on how to prepare vegetables that thrive underground in both familiar and unusual ways. Noon to 12:45 p.m. Free; no registration required. U.S. Botanic Garden Conservatory, 100 Maryland Ave. SW. 202-225-8333. The demonstration will repeat at 12:45 p.m.
- A weekly class on “Basic Knitting: Casting On, Garter Stitch, Purl Stitch” will offer instruction for beginners who want to learn the essential foundations of knitting. 5 p.m. Free. West End Library, 2301 L St. NW. 202-724-8707.
Discussions and lectures
- Paul Mihailidis, a professor of journalism and civic media at Emerson College, will give a lecture on changing media literacy initiatives in the digital age. 5 to 6:30 p.m. Free. Pedro Arrupe, S.J. Hall, Georgetown University, 37th and O streets NW. Contact Jennifer Rosales at email@example.com.
- Georgetown University will host a gallery talk and reception for its new exhibition on World War I, “A War to End All Wars?” 6 to 8 p.m. Free. Joseph Mark Lauinger Memorial Library, 37th and O streets NW. Contact Emily Minton at firstname.lastname@example.org.
- Marking the 286th anniversary of George Washington’s birth, Kevin J. Hayes, a professor at the University of Central Oklahoma, will discuss and sign copies of his book on the intellectual life of George Washington, “George Washington: A Life in Books,” created using information revealed through the study of Washington’s papers, journals and personal collection of books. 6 p.m. Free. Anderson House, 2118 Massachusetts Ave. NW. 202-785-2040.
- Artist Lyle Ashton Harris will examine the impact of ethnicity, gender and desire on the contemporary social and cultural dynamic as part of a conversation with Sheri Parks, the associate dean for Research, Interdisciplinary Scholarship and Programming at the University of Maryland. 6:30 p.m. $12, free for students and members; reservations recommended. The Phillips Collection, 1600 21st St. NW.
- Michele Rigby Assad will recount the covert operatives and dangerous missions she completed as a CIA counterterrorism specialist, which are detailed in her new book, “Breaking Cover.” 6:30 p.m. $10 to $15. International Spy Museum, 800 F St. NW. 202-393-7798.
- The Architecture and Design Film Festival will kick off with food, drinks for purchase and a screening of “Big Time” – a documentary about architect Bjarke Ingels and his mission to complete the skyscrapers W57 and World Trade Center 2 in New York. Ages 21 and over. 6 to 9:30 p.m. $25 for National Building Museum members; $35 for non-members; $125 for an all-access pass. National Building Museum, 401 F St. NW. 202-272-2448. The festival will continue through Feb. 25.
- The American University School of Communication will screen the Voice of America documentary “Boko Haram: Journey From Evil,” followed by a discussion with VOA filmmakers Beth Mendelson and Ibrahim Ahmed. 6:30 p.m. Free. Malsi Doyle and Michael Forman Theater, 4400 Massachusetts Ave. NW. 202-885-1000.
- Shakespeare Theatre Company will host a “Happenings Happy Hour,” where the Academy for Classical Acting class of 2018 will perform scenes and songs. 6 to 7 p.m. Free; reservations required. Sidney Harman Hall, 610 F St. NW. 202-547-1122.
- The U.S. Botanic Garden will hold a special “February Snugglers” tour of the Conservatory for parents with infants in a snuggly. 10:30 to 11:30 a.m. Free; registration required. U.S. Botanic Garden, 100 Maryland Ave. SW. 202-225-8333.