Come Dance. Ballet Austin’s annual free day of dance. RSVP is encouraged to help Ballet Austin plan. 1 p.m.-5:30 p.m. Sunday. Ballet Austin’s Butler Dance Education Center, 501 W. Third St. balletaustin.org.
Mother Earth Day Festival and Back-to-School Nature Bash. Hear Bill Oliver & the Otter Space Band, Hey Lollies Brass Bands, Ortega Superstars Choir, plus see pirates, science and watershed exhibits, solar-powered things, Austin Bat Refuge, magic and make art. 9 a.m. to 1 p.m. Friday. Free. Zilker Park near the Zilker Hillside Theater and Barton Springs.
Fit Kids Fest. Enjoy free activities such as trampolines, family workouts, yoga, climbing wall, cooking demonstrations, garden starter kits and more. 9 a.m. to 1 p.m. Saturday. Free. City Terrace, Long Center, 701 Riverside Drive. thelongcenter.org
Emma S. Barrientos Mexican American Cultural Center. 10th Year Anniversary. Open house and family activities, 4-6 p.m. Saturday; grand opening performance on the plaza, 6 p.m. Emma S. Barrientos Mexican American Cultural Center, 600 River St. austintexas.gov
Thinkery. Little Thinkers Club. 1,2,3 … Paint with Me. Learn about painting. 9:45 a.m. for 1-year-olds, 10:45 a.m. for 2-year-olds. Wednesdays, through Oct. 25. $20 per class, $140 for the series. Little Thinkers Club. Get Into Shapes. 9:45 a.m. for 2-year-olds, 10:45 a.m. for 3-year-olds, Fridays, through Oct. 27. $20 per class, $140 for the series. Baby Bloomers. Learn about colors. For infant to 3. 9 a.m. Mondays and Saturdays. Special guests throughout the month. $5. Decoding DNA. Extract DNA from fruit and vegetables. For ages 4 and up. 11:15 a.m., 1:15 p.m. and 3:15 p.m. Saturday. $8. Back to School Makershop. Make your own pencil bag. For ages 4 and up. 11:15 a.m. and 1:15 p.m. Sunday. $8. For ages 8 and up. 3:15 p.m. Sunday. Thinkery, 1830 Simond Ave. thinkeryaustin.org
Texas Museum of Science & Technology. Star Party. Look at the stars. 9 p.m. Fridays. Texas Museum of Science & Technology, 1220 Toro Grande Drive, Cedar Park. txmost.org
Wildflower Center. Sprouts. Hands-on preschool program. 10 a.m. Wednesdays and Fridays. Nature Play Hour. Play in the Family Garden. 11 a.m. Saturdays. Wildflower Center, 4801 La Crosse Ave. wildflower.org
Toybrary Austin. Gardening Class. 10:45 a.m. Tuesdays. Free. Date night babysitting. For ages 1-5. $25 first child, $10 siblings. 5-8 p.m. Saturdays. Songs for Seeds Music Class. 10:30 a.m. Wednesday. Free. Toybrary Austin, 2001 Justin Lane. toybraryaustin.com
“Trolls” with a black-light party. 8:15 p.m. Saturday. $25 a car, plus admission for more than 2 people. Blue Starlight Mini Urban Drive-in. 12419 Lowden Lane. bluestarlitedrivein.com
Zach Theatre presents “The Lion, The Witch and the Wardrobe.” Head to Narnia in the C.S. Lewis tale. 2 p.m. Sunday and Saturday. More shows through Feb. 10. $18-$24. Whisenhunt Stage, 1510 Toomey Road. zachtheatre.org
Austin Playhouse presents “The Selfish Giant.” Austin Playhouse adapts this Oscar Wilde story of a giant that builds a wall to keep children out. 7 p.m. Tuesday, Noon and 2 p.m. Saturday. Pick your price. Austin Playhouse at Austin Community College’s Highland Campus, 6001 Airport Blvd., South Entrance. austinplayhouse.com
BookPeople events. Events: Cory Putnam Oakes reads “Witchtown.” 3 p.m. Sunday. Story times: Cat in the Hat Birthday Party. 10:30 a.m. Tuesday. Ms. Staci. 10:30 a.m. Wednesday. Hats Off. 11:30 a.m. Saturday. BookPeople, 603 N. Lamar Blvd. bookpeople.com
Barnes & Noble Events: Author Reshma Saujani reads “Girls Who Code: Learn Code and Change the World,” 7 p.m. Thursday, Arboretum. 11 a.m. Saturday story time at all locations: “Princesses Wear Pants.”
At the library
Bow Wow Reading with Roo. 4:30 p.m. Wednesday, Little Walnut Creek Branch.
Music & Movement. 11 a.m. Monday, Pleasant Hill Branch; 11:30 a.m. Wednesday, Manchaca Road Branch; 11 a.m. Thursday, Howson Branch.
Austin Ukestra, ukulele group. 1 p.m. Sunday, Recycled Reads Bookstore.
Crafternoon. 3:30 p.m. Monday, Manchaca Road Branch.
Family Movie Night, “Beauty and the Beast.” 6 p.m. Tuesday, Twin Oaks Branch.
NBTween Book Club: “Full of Beans.” 4 p.m. Wednesday, Howson Branch.
Night Builders: Family Lego Lab. 7 p.m. Thursday, Hampton Branch at Oak Hill.
Friday Movie Matinee: “E.T.” 3:30 p.m. Friday, Old Quarry Branch.