School-Day Field Trips

School day field trips include: 

  • 1-hour of guided hands-on investigations aligned with NGSS and Amplify science standards -- activities  building electromagnets, dissecting squid, constructing motor toys, observing insect life cycles, and much more. 

  • 30-minutes of unstructured, free exploration time to discover our exhibits, animals, and our expansive collection of bones, instruments, magnets, insects, rocks, microscopes, and more.


After-school Programs

Build a homemade scooter! Explore dry ice! Wire a scribble-bot! Ride our homemade hovercraft! 

We partner with local community groups  such as YMCA, Boys & Girls Club, Jamestown and many more, to host students for after-school programs.  

Our after-school programs give students the chance to design their own projects and curriculum based on their own interests, and spend more time in the workshop outside of the school day. 



Drop-in! for Free!

Want to come visit, build and explore -- after-school or on the weekend? We have several (free!) drop-in programs for you to visit. During these programs, we open our doors to the community, where scientists of all ages can explore our space at no cost.


Tinker Times

  • Excelsior Site: Every Monday after school (except holidays),

3:00 to 5:00pm 

  • Mission Site: Every Wednesday after school (except holidays),

3:00 to 5:00pm


Second Saturday at Mission Site

  • Every 2nd Saturday of each month of the school year

10am - 3pm


Third Saturday at Excelsior Site

  • Every 3rd Saturday of each month of the school year,

10am - 3pm


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Workshop Locations:

Mission Site  map

3750 18th St,

San Francisco, CA 94114

(415) 621-1240

Excelsior Site map

4458 Mission St,

San Francisco, CA 94112

(415) 594-9165