 In this study, a STEM activity was designed for ninth-grade students to make incubators using the engineering design process. The activity was conducted in the context of energy conversion and involved 34 students from a public school in the eastern Black Sea region of Turkey. The activity lasted seven lessons, each lasting 40 minutes, and took place during the fall semester of the 2019 to 2020 academic year. During the activity, students experienced the engineering design process as they worked together to solve problems related to energy conversion. They also developed their STEM literacy skills through the process. This article was authored by Fethi Karsley-Badier and Aidan Mara Boder.