The Roxy Theatre Group, a nonprofit arts organization for children, presents "Once Upon a Mattress," a musical comedy based on Hans Christian Andersen's classic fairytale "The Princess and the Pea." 8 p.m. Fridays and Saturday. 3 p.m. Sundays. Ends August 1. The Roxy Performing Arts Center, 1645 SW 107th Ave. $20. Details: (305) 226-0030 or email@example.com or www.roxypac.com.
Roam among Jurassic reptiles at the Miami Children's Museum's "Dino Island" exhibit. The 2,500-square-foot, custom-built set is home to nine lifelike dinosaurs, including a Tyrannosaurus Rex and a Triceratops mother and baby, that walk, feed and roar. Other features include a periodically erupting volcano and a fossil-dig station. Ends Jan. 2. Miami Children's Museum, 980 MacArthur Causeway, Watson Island. Museum entrance is $15 for adults and children, $12 for Florida residents and free for children under one year. Details: (305) 373-5437 or www.miamichildrensmuseum.org.
Pop artist Romero Britto is to show off his children's book, "My Alphabet Playbook." Filled with colorful, press-out letters in Mr. Britto's signature style, children can learn their ABC's and create their own Britto-esque sculptures. 2 p.m. Books & Books, 265 Aragon Ave., Coral Gables. Details: (305) 442-4408 or www.booksandbooks.com.
Children 6 to 10 can learn about nature through art and science activities at the Fairchild Farm Summer Camp, an arm of Fairchild Tropical Botanic Garden. Four weeklong sessions include hands-on activities, field trips and daily lunch and snacks. 9:30 a.m.-3:30 p.m. Ends Aug. 6. Fairchild Farm, 14885 SW 248th St., Redland. $150 per week members. $175 per week others. Details: (305) 258-0464 or firstname.lastname@example.org or www.fairchildgarden.org.
City of Miami Parks is offering summer camps at 27 parks. Activities include swimming lessons, field trips, sports, a talent show and an end-of-summer picnic. Ends Aug. 13. $50 per week for City of Miami residents, $60 per week for others, plus a $10 registration fee. Details: (305) 416-1300 or www.miamigov.com/parks.
ON THE WATER
Campers can spend their summer sailing, kayaking and windsurfing at Shake-A-Leg Miami's Watersports Camp, open to children 8-14. Ends Aug. 20. Shake-A-Leg Miami, 2620 S Bayshore Drive, Coconut Grove. $500 per two-week session. Details: (305) 858-5550 or email@example.com or www.shakealegmiami.org/summercamp2010.
Tour 22 large, inflatable fabric sculptures and watch an interactive performance at "Giant Family Day" in conjunction with the Giants in the City art exhibit. Miami Beach Botanical Garden, Address. Free. Details: www.mbgarden.org.
JEALOUSY AND BETRAYAL
Young ballet dancers perform excerpts from "La Bayadere," a passionate ballet filled with jealousy, betrayal and tragedy. 7 p.m. Aventura Arts & Cultural Center, 3385 NE 188th St., Aventura. $15. Details: (305) 948-4777 or www.artsballettheatre.org.