This paper describes the journey of d.Loft STEM Learning, a project of The National Science Foundation ITEST program, which supports building knowledge about approaches, models, and interventions involving K-12 education to increase the nation’s capacity and innovation in STEM (science, technology, engineering and mathematics) fields. d.Loft STEM Learning used design thinking as an underlying theoretical and pedagogical approach to enhance STEM learning. Design thinking is a human-centered, prototype-driven innovation process and a series of mindsets that provides a robust scaffold for