Spring Fling at Mossy Creek Elementary School, Cleveland. Food, games, silent auction and local vendors. 11 a.m. to 3 p.m. Saturday, Mossy Creek Elementary School, 128 Horace Fitzpatrick Drive, Cleveland. $30 for vendor booths, 25 cents per ticket for games. Some games require more than one ticket. 706-865-5000.
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. May 16, Lake Lanier Olympic venue, 3105 Clarks Bridge Road, Gainesville. $5 per duck "adoption." 770-656-3825 or 770-532-8102.
"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.