“…However, few practice-based assessments are designed to measure the professional knowledge that science teachers are called on to use as they engage in these tasks of teaching. The practice-based CKT assessments that measure the knowledge used in teaching science focus mainly on science teachers' pedagogical content knowledge (Lee, Brown, Luft, & Roehrig, 2007) and involve teachers in tasks that require substantial time to administer and score, such as analyzing video-recorded episodes of practice (Roth et al, 2011), participating in think-aloud or cognitive interviews (Henze & van Driel, 2015;Park & Suh, 2015), conducting classroom observations (Park & Oliver, 2008;Park & Suh, 2015), or documenting their pedagogical content knowledge for particular science topics using graphic organizers (Bertram & Loughran, 2012;Loughran, Mulhall, & Berry, 2004). To date, only a few notable efforts have developed large-scale, practice-based assessment items to measure the professional knowledge specialized to science teaching (Sadler, Sonnert, Coyle, Cook-Smith, & Miller, 2013;Smith & Taylor, 2010).…”