THE LIGHT OF EXCALIBUR -- Closes today. Merlin the magician travels to the future to help a teenager named Agnes with her problems and at the same time obtain modern knowledge. Kennedy Center, Theater Lab, 2700 F St. NW. $14. 202-467-4600.

THE WIGGLES IN CONCERT -- Tuesday at 3 and 6:30 p.m.

The four Aussies return with Wags the Dog, Dorothy the Dinosaur, Henry the Octopus and Captain Feathersword. MCI Center, 601 F St. NW. $18-$33. 202-397-7328.

MY DADDY IS A PRETZEL -- Friday at 10:30 a.m. Yoga teacher Baron Baptiste reads from his book, which includes illustrations of yoga positions for kids to try. Politics & Prose, 5015 Connecticut Ave. NW. Free. 202-364-1919.

CREATE A CHARACTER DOLL -- Saturday, 10 a.m.-5 p.m. Ages 12 and older. After seeing dolls in the museum's collection, create your own based on someone from a book, poem or fairy tale with Francine Haskins, a local author, illustrator and doll artist. Basic supplies included. Anacostia Museum and Center for African American History and Culture, 1901 Fort Pl. SE. $10. For reservations, call 202-287-3369.

OPERATION INTERROGATION: SPIES AND LIES -- Saturday at 10:30 a.m. Ages 11-15. Learn how to tell if someone is lying and try to trick a polygraph. International Spy Museum, 800 F St. NW. $25. For reservations, call 202-397-7328.

ARTFUL ARCHITECTURE FAMILY DAY -- Saturday, 11 a.m.-3 p.m. Dancers from the Washington Ballet perform excerpts from "The Nutcracker" and teach a dance inspired by the museum's architecture from 11 a.m. to 12:30 p.m. Make a wearable work of architecture from 12:30 to 3 p.m. National Building Museum, 401 F St.

NW. Dance free, project $5. 202-272-2448.