EARLY CHILDHOOD MUSIC CLASS DEMONSTRATIONS -- Today, 2-4:30 p.m. Ages 2-5. Singing games, performances and instrument demos. Westover Baptist Church, Levine School of Music, 1125 N.

Patrick Henry Dr., Arlington. Free. For reservations, call 703-237-5655.

FREEDOM'S CHILD -- Tuesday, Thursday, Friday and May 28 at 10 and 11:30 a.m. Ages 6-12. An original musical about civil rights pioneers Ruby Bridges, Ernest Green and Claudette Colvin. Arts & Industries Building, Discovery Theater, 900 Jefferson Dr. SW. $5, children $4. 202-357-3030.

THE DR. FAD SHOW: LET'S BE CREATIVE -- Thursday at 10:30 a.m. Ken Hakuta, who became famous in 1983 for his novelty toy the Wacky Wall Walker, demonstrates the inventing process. National Museum of American History, Information Age Theater, 14th Street and Constitution Avenue NW. Free. 202-357-2700.

VIVA MEXICO -- Saturday, 10 a.m.-5 p.m.; May 23, 11 a.m.-6 p.m. Ages 3 and older. Art activities, music, storytelling and films in conjunction with two exhibitions. Plus, walk through a rain forest replica. National Gallery of Art, East Building, Fourth Street and Constitution Avenue NW. Free. 202-737-4215.

GALAPAGOS GEORGE -- Saturday at 10:30 a.m. and noon. A puppet show about a giant tortoise by Barefoot Puppets. Old Town Theater, 8151/2 King St., Alexandria.

$7, ages 8 and younger $5. 703-683-8888.

'SHREK' IN THE FIELD -- Saturday, doors at 6:30 p.m. The movie starts at dark. Includes food, games, jazz and prizes. Benefits Habitat for Humanity. Elbert Einstein High School, 11135 Newport Mill Rd., Kensington. $3. 240-888-2898.