Learn how to build a simple pyramid catapult using pencils and other household materials and the designs in Lance Akiyama’s book Rubber Band Engineer.

Then test your catapult for distance, accuracy, and power in the Great Marshmallow Challenge.

Building supplies are limited, so please RSVP or sign up at the reference desk to reserve your space.

Program schedule is subject to change. Contact the library 15 days in advance to request a sign language interpreter or if special accommodations are needed.