Can you make your favorite ice cream without a machine? Learn chemistry concepts and make delicious ice cream with house-hold ingredients. Gather 2 tablespoons of sugar, a cup of half-and-half, mild or heavy cream, vanilla extract and salt for this challenge with YELL 2020 teen interns Bryce, Leah, Joyce L., Sharon, Elio, Sophia and Aashka.

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 www.sfpl.org/stemchallenge for more resources.