To improve access to STEM curriculum, an activity was planned that presents the opportunity to design and build using gears and other tools. In this challenge, preservice elementary school teachers were asked to mathematically analyze gears and create an amusement park ride that uses gears to spin. Although this lesson was implemented with preservice teachers, it was designed to embed elementary school curriculum within the context of learning content. The Amusement Part Ride challenge offers the chance to explore STEM within the context of future curriculum that elementary school teachers may teach. The lesson can easily be explored with students in intermediate elementary grades as well.