A New Evaluation Model For Assessing Effectiveness Of A Large Scale Professional Development Program About Nature Of Science - Erdaş Kartal Eda; Doğan Nihal; İrez Osman Serhat; Çakmakcı Gültekin; Yalaki Yalçın; Altıner Zekai Berk; Köylü Zeynep Neslihan (My University, 2017)