# STEM on Saturday — Roseville Downtown Library > Event for families in the Sacramento–Roseville–Folsom area (CA). Times are Pacific Time. - When: Sat, Nov 21 (+1 more date) · 11:00 AM – 12:00 PM - Where: Downtown Library (Roseville Public Library), 225 Taylor Street, Roseville, CA 95678 - Ages: Ages 12 and under - Price: Free - Organizer: Roseville Public Library - Official page: https://www.roseville.ca.gov/prl/library/index.php - Last checked: Tue, Oct 27 Source: Grassy Knees is a directory of real family events, places and programs for kids across major U.S. metro areas, where every listing is researched from the organizer’s own page and shows the date we last checked it. https://grassyknees.com covers 42 metro areas as of Nov 2, 2026, with more added regularly. About: https://grassyknees.com/about Freshness: listings are re-checked on a daily research run (latest check 2026-11-01), and new events are added as organizers post them. Sell-outs, weather cancellations and time changes show up on the live page first: https://grassyknees.com/sacramento/activities/stem-on-saturday-roseville-downtown-library--listing-9f65f92ca48a98c2f6ba3fa3 ## About On the third Saturday of the month, teen volunteers run a different hands-on science, technology, engineering or math activity at Roseville's Downtown Library. Children 12 and under can stop by between 11 AM and noon to discover, build and experiment; the activity changes every month, so it's worth coming back. The last two sessions of 2026 are November 21 and December 19, the latter falling at the start of winter break. Free, like the library's other youth programs, with no registration mentioned. ## Similar picks in Sacramento - [STEM Saturday at the Granite Bay Library](https://grassyknees.com/sacramento/activities/stem-saturday-at-the-granite-bay-library--listing-9f7f701a3c1de583d5d2d791) — Sat, Nov 21 (+2 more dates) · Granite Bay Library (Placer County Library) · Ages 5–10 · Free · checked Oct 28. STEM Saturday is a monthly hands-on science, technology, engineering and math program at Placer County Library's Granite Bay branch, aimed at children ages 5 to 10 together with… - [STEM-sters Drop-In STEM Activities — Maidu Library, Roseville](https://grassyknees.com/sacramento/activities/stem-sters-drop-in-stem-activities-maidu-library-roseville--listing-b7500f0a0266f1bbb7fa1226) — Thu, Nov 19 (+1 more date) · 4:00 PM – 5:00 PM · Maidu Library, Roseville · Ages 5–10 · Free · checked Oct 27. 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