STEM lessons,
by students, for students.
We are high schoolers who teach hands-on science, technology, engineering, and math to elementary students at San Francisco public libraries. Always Free.
Curiosity belongs to every kid. They deserve the chance to build, tinker, and wonder. We design free hands-on STEM lessons that make science, technology, engineering, and math come alive for young scientists, engineers, and mathematicians.
We meet at San Francisco public libraries. Every session starts with a short, kid-friendly lesson and ends with an activity you can take home and re-do with a younger sibling that night.
Curiosity, by the numbers.
Lesson then activity. Every time.
Explore Our Lessons Online!
How Sound Works and Instruments
How can you hear sound when you can't see it? Learn about vibrations, then build a variety of homemade instruments.
Catapult
A hands-on activity where we explore the physics behind medieval catapults — then build our own and compete to launch marshmallows the farthest.
Fizzy Balloon Bottles
Inflate a balloon without touching it! Learn the difference between an acid and a base, and explore chemical reactions!