This paper describes the design and implementation of a week-long engineering summer camp that engages pre-college learners in human-centered design principles. Students worked in teams of 3-5 to create and present a viable prototype for a specified user group. The one-week camp engaged students in understanding, ideating, and low-fidelity prototyping. Takeaways from the camp design and implementation are described and possible adaptations to high school science classroom contexts are discussed.