More projects like this at https://www.stem-inventions.com/
Glue gun: https://amzn.to/3nMFeDL

The Young Engineers series is a collection of STEM Projects that I developed while teaching K-6 students. Every project uses the same set of inexpensive materials so it's cost effective for parents and educators to do multiple projects or teach large groups. Printable lesson plans and project picture sheets are available at https://www.stem-inventions.com/lesso...

Handheld Slingshot
This handheld, sturdily-built slingshot is fun, and powerful enough to launch corks or foam cubes 15+ feet! Like many of the launcher projects, explore how trusses can reinforce structures and how potential energy can be transformed into far-flung projectiles!