Lesson library

Explore our lessons.

Every lesson explains the STEM concept, then turns it into a hands-on activity you can do at home or in the classroom. Click a card to begin.

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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.

A hands-on activity where we explore the physics behind medieval catapults — then build our own and compete to launch marshmallows the farthest.

Inflate a balloon without touching it! Learn the difference between an acid and a base, and explore chemical reactions!

Learn how cars work, what they're made of, and the fastest ones on Earth — then design and race your very own balloon-powered car.