This document provides information about the NPASS2 project, which aims to create a scalable model for out-of-school time science programming. It discusses the goals of engaging children in science exploration and increasing their interest in science fields. It then outlines challenges for a roller coaster design activity, including challenges to design ski jumps, hills and valleys tracks, and loops and spirals. It discusses teaching competencies for out-of-school time science and closing the activity with a discussion.