“…While engineering increasingly populates state education frameworks in the U.S. (Moye, Dugger, & Starkweather, 2012) and now features prominently in NGSS, research on pre-college engineering professional development is still emerging (Daugherty & Custer, 2012;Wang, Moore, Roehrig, & Park, 2011) and these findings, however exploratory, contribute to that dialogue. Borrowing from one of our participants, if we understand teachers as on the forefront of cultivating the ''new generation science engineers,'' and NGSS as guiding that cultivation, then we must take seriously what conceptions teachers have of engineering, and what conceptions they emerge with and carry into their classrooms.…”