The PencilPult is a Catapult intended to help learn simple 3D designs. It uses basic shapes and some common items from around the classroom. It is intended to be used in combination with any catapult type lessons. It also features a minimalistic design that can be printed in under 15 minutes, allow each student to possibly print their own. It may allow the teacher to combine blocks based coding, 3d design, printing and some basic physics.
An instructional video is available to help a student design the project from scratch at:
[https://www.youtube.com/watch?v=VtBcJhukA-I] ( BlocksCAD - Catapult )
This was designed in BlocksCAD using very basic shapes as a framework for a lesson on basic physics.