Summer Khadour (right) and her sister Jennifer Lewis (left) race one another in the electron race during the 2019 Tempe campus Open Door on Feb. 23.

Six-year-old Annika LaRue admires her finished face painting at the ASU Open Door on Feb. 23. She and her twin sister, Bridget, got matching decorations. The university's annual open house drew thousands of families from all over the Valley to explore activities and programs in the labs and innovative learning spaces.

Tiana and Morgan play the drums with their Girl Scout troop, led by ASU School of Music community engagement coordinator Samuel Peña.

ASU staff member Erik Wirtanen and his daughter Mara Jade put together their gummy DNA during Open Door.

Biodesign Institute director Joshua LaBaer looks on with his daughter, 12-year-old Sarah, as she uses a virus to kill cancer.

William plays a memory game where he steps on the the colored dots in the correct sequence after hearing them only once.

Melissa Stevens and her daughters (from left to right) Kelsey, Natalee, Karlee and Heidi make small robots at the School for the Future of Innovation in Society booth on Old Main during the 2019 Tempe campus Open Door.

Nine-year-old William Conkle, of Mesa, dries his Harry Potter wand at the ASU Open Door.

Emaya Mojica displays her clay Teotihuacan figurines at Open Door. 

Michelle Aigner, a lab coordinator, teaches 9-year-old Parer Kurasch, of Scottsdale, about Earth impact craters.

Citta Anspacto does a series of excercises with Austin Hereford, a senior studying excercise and wellness, at the ASU Tempe campus Open Door. 

Richard Kirian joins his daughter Emelissa Kirian on the slide during Open Door. 

Six-year-old James Smith gets help putting on his astronaut suit at Open Door.

Felicia Zhang (left) and Destiny Alejo (center) meet Blue, the rosy boa, at the School of Life Sciences display at Open Door.

A Star Wars TIE fighter pilot keeps an eye out at Ross-Blakley Hall during Open Door.

Arabic lecturer Neimeh Mousa writes the names of Jacob Dylan Surgener (right )and Jacob Diaz (center) in Arabic during the 2019 Tempe campus Open Door.

Maurice Perreault, 4, of Tempe, learns about nanotechnology water treatment at ASU Open Door.

Freshman brothers Vineet Butala and Rushal Butala, (center) learn about steering a ferrofluid through a small maze with mechanical engineering master's degree student Dakota Edwards in the BIRTH (Bio-Inspired Robotics Technology and Healthcare) lab.

Chemistry doctoral student Edgar Reyes plays his guitar and the Rubens' tube responds to the chords played by emitting different levels of fire. 

Christi Hing watches as her nieces Hannah Yee (center) and Allison Hing (right) make their toothbrush robots.

Isaac Taliaferro (left) and Leina Ooi (right) learn about foot and hand bones of animals and how they have evolved at the Institute of Human Origins display.

Victoria Piedmont does a pull-up with some help from exercise wellness senior Maram Sweis.

Deborah Tapia watches as a grasshopper makes its way down her mother's arm at the School of Life Sciences display.

ASU business analytics and organization leadership senior Brooke Overturf takes graduation pictures with her pup, Bella, during the 2019 Tempe campus Open Door. 

Torin Burns flies his paper airplane and learns about engineering during the 2019 Tempe campus Open Door.

Tyler Huynh sits in the Sun Devil Motorsports car as freshman aerospace engineering student Brycen Zolnick explains details about the car to his mother, Betty Nguyen, and his family.