WHO'S HIDING IN OUR WOODS? -- Today at 11 a.m. A discussion of how insects use camouflage to survive in Rock Creek Park, with an opportunity to try out some of their techniques. Rock Creek Park Nature Center, 5200 Glover Rd. NW. Free. 202-895-6070.
BUTTERFLY WALK -- Today at noon. Photographer William B. Folsom and butterfly enthusiast Mona Miller lead a guided walk. Meadowlark Botanical Gardens, 9750 Meadowlark Gardens Court, Vienna. $5, children and seniors $2.50. 703-255-3631.
BLACK AND WHITE -- Tuesday-Thursday at 2 p.m. Learn about the use of black and white in Chinese ceramics, then create your own picture. Arthur M. Sackler Gallery, ImaginAsia classroom, 12th Street and Independence Avenue SW. Free. 202-633-4880.
SHINING SHAPES -- Wednesday at 11:30 a.m. and 1:30 p.m. Create a mirrored window ornament. National Building Museum, 401 F St. NW. $3. 202-272-2448.
BIKE HIKE -- Friday at 2 p.m. Ages 10 and older. A ranger-led exploration of Rock Creek Park up to Boundary Bridge. Bring your own bike and water; helmets required. Rock Creek Park Nature Center, 5200 Glover Rd. NW. Free. 202-895-6070.
MATERIAL EXPLORATIONS: MASONRY -- Saturday at 1 p.m. A demonstration of building materials is followed by a sculpture workshop using masonry tiles. National Building Museum, 401 F St. NW. $5. 202-272-2448.
DINOSAUR BOOK OF WORLD RECORDS -- Through Sept. 4. A puppet show stars creatures from the age of the dinosaurs. Glen Echo Park, Puppet Co. Theater. 7300 MacArthur Blvd., Glen Echo. $7. 301-320-6668.
DISNEYLAND: THE FIRST 50 YEARS -- Through Sept. 5. An exhibition that commemorates Disneyland's 50th anniversary includes cars from two of the park's most recognizable attractions, "Dumbo the Flying Elephant" and the "Mad Hatter's Tea Party," plus items from opening day. National Museum of American History, 14th Street and Constitution Avenue NW. Free. 202-633-1000.