Explore museums, nature with the kids this beautiful weekend in Austin, Sept. 15-17

It’s going to be a beautiful weekend for going out with the kids. Check out a new museum during Austin Museum Day and more.

Friday

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.

Thinkery. Little Thinkers Club. Get Into Shapes. 9:45 a.m. for 2-year-olds, 10:45 a.m. for 3-year-olds, Friday. $20 per class, $140 for the series. Thinkery, 1830 Simond Ave. thinkeryaustin.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

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.

Friday Movie Matinee: “E.T.” 3:30 p.m. Friday, Old Quarry Branch.

Ollie Mae Barnet and Luna Santana play in the Light Lab at the Thinkery. RESHMA KIRPALANI / AMERICAN-STATESMAN 2013

Saturday

Thinkery. Baby Bloomers. Learn about colors. For infant to 3. 9 a.m. Saturday. Special guests throughout the month. $5. Thinkery, 1830 Simond Ave. thinkeryaustin.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. 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

Toybrary AustinDate night babysitting. For ages 1-5. $25 first child, $10 siblings. 5-8 p.m. Saturdays. Free. Toybrary Austin, 2001 Justin Lane. toybraryaustin.com

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

“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

Austin Playhouse presents “The Selfish Giant.” Austin Playhouse adapts this Oscar Wilde story of a giant that builds a wall to keep children out. 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 Story time: Hats Off. 11:30 a.m. Saturday. BookPeople, 603 N. Lamar Blvd. bookpeople.com

Barnes & Noble 11 a.m. Saturday story time at all locations: “Princesses Wear Pants.”

“The Selfish Giant” is at Austin Playhouse.

Saturday-Sunday

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-Sunday. $8. Thinkery, 1830 Simond Ave. thinkeryaustin.org

Zach Theatre presents “The Lion, The Witch and the Wardrobe.” Head to Narnia in the C.S. Lewis tale. 11 a.m. Saturday; 2 p.m. Saturday and Sunday, More shows through Feb. 10. $18-$24. Whisenhunt Stage, 1510 Toomey Road. zachtheatre.org

Bryce Hohertz, 7, of Dripping Springs, and his brother Cole, 5, look through spectroscopes to observe the spectrum of light at the Bullock Texas State History Museum. Austin museums are free on Sunday for Austin Museum Day. JAY JANNER / AMERICAN-STATESMAN 2016

Sunday

Austin Museum Day. Local museums will be free this day, and many of them will have special events and hands-on activities. Sunday. austinmuseums.org

Austin Film Society Sunday School. “Donkey Skin.” Catherine Deneuve stars in this fable. $9. Noon. Sunday. Austin Film Society Cinema, 6406 N. Interstate 35, Suite 3100. austinfilm.org

BookPeople events. Madeline Smoot and Jessica Lee Anderson read “The Monsters Hiding in Your Closet” and “Uncertain Summer.” 2 p.m. Sunday. BookPeople, 603 N. Lamar Blvd. bookpeople.com