In this activity from the Jet Propulsion Laboratory, students apply the engineering design process to construct a glider that mirrors the technology of modern airliners. In this challenge, participants are tasked with using a single sheet of paper to create a glider utilizing the ring-wing lift body concept. While the introduction and procedure itself are quick, most of the time in this activity is dedicated to the improvement process, where students make modifications to their design while discussing cause-effect relationships between the model and flight trials. This resource would work best when supplemented with a video or article on engineering design or aeronautical science.