Join Librarian Davey for a bubbly experiment with yeasts and microbes. Gather a jar, flour, water, a fork and a breathable lid.

Live STEM Lab with SFPL is created by the STEM Challenge Yo’Self Youth Librarian team. Bring your questions and share your work.

Stay STEM-tastic by reading, learning and experimenting at home. Gather materials for a new challenge posted weekly on Mondays at 2pm. Then, register for a Live STEM Lab with SFPL on Tuesdays at 2pm.