“…Numerous studies have focused on PCK; their aim has been to understand the kinds of knowledge needed for teaching (e.g., Jüttner, Boone, Park, & Neuhaus, 2013;McConnell, Parker, & Eberhardt, 2013;Scheiner, Montes, Godino, Carrillo, & Pino-Fan, 2019). In contrast to PCK, few studies have explored CK and changes in teachers' CK experienced over the years (Boothe et al, 2018;Rice, 2005;van Driel, Berry, & Meirink, 2014). Our research is based on the consensus that there are connections and even overlap between CK and PCK, but in the field of science education it is important to measure them as separate knowledge domains (Großschedl, Welter, & Harms, 2019;Jüttner et al, 2013).…”