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Since its inception in 2006, Iridescent’s mission has been to foster curiosity, confidence, and a love for science and engineering in underserved children by utilizing undergraduate, graduate, and professional engineers as instructors in the community. Iridescent serves 3 rd -7 th grade lowincome Hispanic and Black students and their families in the greater Los Angeles area. Our approach is to train volunteer engineers to teach cutting edge science to students and their families. This approach leverages a vital, yet untapped resource, engineers, to address the science, technology, engineering, and math (STEM) achievement gap. Engineers become long term volunteers, developing relationships with the children, and bringing valuable social capital into high-need areas. Through our partnership with the University of Southern California (USC), engineering undergraduates enroll in “Engineers as Teachers” and receive 3 units of technical elective credit for participating in our training program. During the 16-week training undergraduate engineers partner with graduate students, faculty and professional engineers and learn to break down complex ideas into simple lessons, identify learning objectives, design aligned experiments and assess learning through a pedagogical theory-based approach. Throughout the training, engineer volunteers develop a story that pervades four to five lessons. Story topics are based on volunteering engineers’ research field so that they can share their expertise with the participating community. To bring research-based STEM topics to the community, volunteer engineers work in pairs to develop lessons and experiments from their field. They then present their lessons and experiments to the whole training group which, in turn, offers suggestions on explanations, experiment design, and how to present the overall concept. Volunteers use an online collaboration site to comment on lesson plans, reflect on their teaching, and post new ideas and material. Volunteer engineers come away from their experience with three main areas of impact. 1) They are empowered by inspiring others. “It is really a big deal to be working with students at a young age so they can be excited about what they're learning and {so these students can} be really ambitious for the future." 2) They learn important lessons in management and public speaking. One volunteer observed, “This is a really useful skill because I’m sure later on in my career I’ll have to explain what I do to an audience that doesn’t necessarily have a background in my field.” 3) They learn more about their own field. One engineer commented: “The day to day life as a student at USC is a lot of theory. When we actually get to go into these classrooms, we’re actually...taking the theories we learned in our books and applying them to small models...” This paper provides rationale for using engineers to deliver content to underprivileged communities, including the benefits to both the communities and the engineers. It outlines the engineers’ training that includes in-depth discussions and applications of established instructional theory and strategy. A key feature of Iridescent’s model is incorporating feedback and evaluation. We employ a multi-method research approach to evaluate the program’s impact P ge 15500.2 on the volunteer engineers by using formative, summative, and self-reflective assessments, as well as interviews. Previous data from the program participants and impact numbers are presented and implications and expected outcomes for the program are discussed.

Engineers As Teachers: Bringing Cutting Edge Math And Science Topics Into Underprivileged Classrooms Via Student And Professional Engineers