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In this article, we describe efforts to reduce barriers of entry to pre-college engineering in a rural community by training local teens to become maker-mentors and staff a mobile makerspace in their community. Following Nasir and Cooks (2009), we bring a communities of practice frame to our inquiry, focusing on inbound and peripheral learning and identity trajectories as a mechanism for representing the maker-mentor experience (Wenger, 1998). Through a longitudinal case study, we traced the individual trajectories of five maker-mentors over two years. We found that maker-mentors who participated in mentorship training activities, collaborated with their peers on making projects, and co-facilitated events throughout the community were more likely to follow an inbound trajectory. Maker-mentors who participated in training activities and collaborative making projects, but only facilitated one or two of the twelve community events never moved beyond the periphery. We offer lessons learned from including a mentorship component in a pre-college maker program, an unusual design feature that afforded more opportunities to create inbound trajectories. A key affordance of the maker-mentor program was that it allowed teens to explore areas of making that were in line with their interests while still being a part of a larger community of practice. Understanding learning and identity trajectories will allow us to continually improve pre-college engineering programming and education opportunities that build on students’ funds of knowledge.
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