MODERN ARF SIDEWALK PAINTING -- Today, 1-3 p.m. Ages 6 and older. Meet by the Clarendon Metro. 1116 N. Hudson St., Arlington. Suggested donation $8-$10. For reservations, call 703-528-4800.

THE NEAR-SIGHTED KNIGHT AND THE FAR-SIGHTED DRAGON -- Today at 1:30 and 3:30 p.m. A play about an unemployed knight, a career-minded princess, a philosopher dragon and a king who needs rescuing. Glen Echo Park, Adventure Theatre, 7300 MacArthur Blvd., Glen Echo. $7. 301-320-5331.

FAMILY DANCE -- Today, 3-6 p.m. Do the waltz, polka, tango and more to live music. The first hour is for ages 4-6, followed by social dancing for older kids. Glen Echo Park, Bumper Car Pavilion, 7300 MacArthur Blvd., Glen Echo. $5. 301-320-8255.

FRACTURED FAIRY TALES -- Wednesday-Friday at 10 and 11:30 a.m. Rand Whipple and Box of Light Theatre Company present a blend of storytelling and audience participation. Arts & Industries Building, Discovery Theater, 900 Jefferson Dr. SW. $5, children $4. 202-357-1500.

DRAWING A POSITIVE IMAGE -- Thursday, 10:30 a.m.-noon. Cartoonist Todd Sprow uses uplifting images and music to spur children to create inspiring characters. Anacostia Museum and Center for African American History and Culture, 1901 Fort Pl. SE. Free. 202-287-3306.

MARS DAY -- Friday, 10 a.m.-3 p.m. Operate a Mars rover

and take part in the Red Planet Quiz Show. Includes art activities. National Air and Space Museum, Seventh Street and Independence Avenue SW. Free. 202-357-2700.

CHILDREN'S ART SMORGASBORD -- July 18, 10 a.m.-noon and 1-3 p.m. Try your hand at a variety of media, led by the Art League School's Art Camp instructors. The Art League, Duke Street Annex, 1 Duke St., Alexandria. $5. 703-683-1780.