“…Few studies have focused on preservice teachers' views of the PNM (De Jong, Van Driel, & Verloop, 2005;Kokkotas, Vlachos, & Koulaidis, 1998;Murcia & Schibeci, 1999;€ Ozmen, Ayas, & Coştu, 2002;Valanides, 2000aValanides, , 2000b. The number of direct studies on in-service teachers' views is even lower (Bindernagel & Eilks, 2009;Eilks, 2013Eilks, , 2015Papageorgiou, Stamovlasis & Johnson, 2010). Worrying research results show that in-service teachers have similar and alternative concept with respect to those of students and teacher students (Eilks, 2013(Eilks, , 2015Papageorgiou et al, 2010).…”