Spring Fling Daddy & Daughter Dance, Clarkesville. Spaghetti dinner, dance and photography sessions. 6:30 to 8:30 p.m. Friday, Fulbright Aquatic Center, 120 Paul Franklin Road, Clarkesville. $15 per couple; $6 per additional daughter. Limited space. 706-754-3650.
Mule Day 2009, Jefferson. Learn what life was like on a rural Georgia farm in the early 1900s. 10 a.m. to 3 p.m. Saturday, Shields Ethridge Heritage Farm, 2355 Ethridge Road, Jefferson. $5 for adults, free for ages 17 and younger. 706-367-8015.
Rubber Duck Derby, Gainesville. Benefits the Boys & Girls Clubs of Hall County. "Adopt" rubber ducks to compete for prizes in a race. Games, food, live music and health screenings. Derby at 2 p.m.; events from 10:30 a.m. to 2:30 p.m. Saturday, Lake Lanier Olympic venue, 3105 Clarks Bridge Road, Gainesville. $5 per duck "adoption." 770-656-3825 or 770-532-8102.
Family Fun Day, Gainesville. Learn safety tips for your family. Cake walks, moonwalks, games and karate demonstration. Saturday, Clark's Bridge Park, 3105 Clarks Bridge Road, Gainesville. Free.
Sunday in the Parks, Gainesville. Butterfly release and family-friendly activities. 1-4 p.m. Sunday, Wilshire Trails Park, Gainesville. Free.
Movies Under the Stars, Buford. 6:30 p.m. Saturdays through Aug. 22. May 23: music by Ally X, screening of "Paul Blart: Mall Cop;" May 30: music by Mike Rogers Band, screening of "Madagascar: Escape 2 Africa. Mall of Georgia, 3333 Buford Drive, Buford. 678-482-8788.
"Tools for Living," Sautee. Exhibit of tools used to sustain early valley inhabitants. 10 a.m.-5 p.m. Monday-Saturday, 1-5 p.m. Sunday, Sautee Nacoochee Community Association History Museum, 283 Ga. 255 N, Sautee. 706-878-3300.
Story times, Hall County. Children can listen to stories, sometimes read by special guests. Various days and times at libraries in the Hall County Library System. Free.
"Waters of Time: The Chicopee Woods Story," Gainesville. Learn about previous eras and inhabitants of Chicopee Woods. 10 a.m. to 5 p.m. Monday-Saturdays, Elachee Nature Science Center, 2125 Elachee Drive, Gainesville. $3 adults, $2 children ages 2-12, age 1 and younger and members free. 770-535-1976.
The Amazing Castle, Atlanta. Children can pretend to be a blacksmith, jester, prince or princess in a make-believe medieval community. Through May 26, Imagine It! The Children's Museum of Atlanta, 275 Centennial Olympic Park Drive NW, Atlanta. 404-659-5437.
"Dinosaurs: Ancient Fossils, New Discoveries," Atlanta. Through Aug. 16, Fernbank Museum of Natural History, 767 Clifton Road NE, Atlanta. $15 adults, $14 students and seniors age 62 and older with ID, $13 children ages 3-12, free for children age 2 and younger and museum members. 404-929-6400.