Thursday, 10/22/2020
3:00 - 3:15
Virtual Library

Online Services
San Francisco, CA 94102
United States

Can you make color dyes float in liquid? Learn the properties of water and surfactants to float colors. Gather food coloring, whole milk, liquid dish soap/detergent, cotton swab, and shallow dish for this challenge with YELL 2020 teen intern Leah.


Tune in to SFPL YouTube.


STEM Challenge Yo’Self | Teen Takeover is created by the San Francisco Public Library from the Youth Engaged in Library Leadership (YELL) STEM team. Stay STEM-tastic by reading, learning and experimenting at home. Gather materials for a new challenge posted at 3pm on weekdays throughout October. Visit for more resources.