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Science & Engineering


Why STEAM Expo?

More than just a Science Fair, the Tuolumne County STEAM Expo offers a place for students to exhibit their work alongside entertainment and learning opportunities for the entire family. We allow young minds to experience an innovative environment of hands-on science. The STEAM Expo enables students to explore their interests and talents by offering six elective categories from which students can choose: Science Fiction Writing, Scientific Illustration/Nature Notebooking, Rube Goldberg Devices, Biomimicry, Engineering Design Process, and Scientific Inquiry.

The Tuolumne County STEAM Expo is designed to:

  • Motivate and stimulate the interests of ALL students in all grades in the STESM fields: Science, Technology, Engineering, Arts, and Mathematics.
  • Inspire students to think creatively, collaborate, and solve problems. 
  • Celebrate student achievements and efforts in STEAM.
  • Provide students the opportunity to connect to local STEAM professionals.


Tuolumne County STEAM Expo Supporters

Columbia College
Forest Service
Tuolumne River Trust
Tuolumne County ARTS
Tuolumne County Public Health
PMA Consultants


February 28, 2024
5 pm – 7 pm
Manzanita Building
Mother Lode Fairgrounds

Event Contact

Tricia Dunlap


Tuolumne County public schools and participating private schools use this link to register your student and class projects.

Registration Deadline: February 16. 2024

(Requires Google Sign-In)

Private School Participation

If you want more information about becoming a participating private school, contact Diana Harford, Deputy Superintendent, Educational Services, at, 209-536-2074.


Spotlight Exhibit

At this year’s STEAM Expo, we are partnering with the San Joaquin County Office of Education to bring the StarLab, a portable planetarium. Participants will explore the night sky, travel the solar system, and immerse themselves in a world of intergalactic wonder.

Tours given every 30-minutes.