Discover how to build a catapult out of sticks at the next Second Saturday Science, scheduled for 10:30 a.m.-12:30 p.m. Saturday, Oct. 14, at the Sequim Library, 630 N. Sequim Ave.

Instructor Brad Griffith teaches children of ages 7-12 how to explore concepts related to science, technology, engineering, and math by bending craft woods, building their own catapults and testing their creations.

They will learn how to make your own tools with common household items and their own creativity at home. Participants also receive a 90-minute instructional DVD.

All materials will be provided.

The class is free, but preregistration is required because of limited space. To register, visit the Sequim Library events calendar at www.nols.org, call the library at 360-683-1161 or send an email to youth@nols.org.