DEMİRBAĞ, B., FEYZİOĞLU, B., ATEŞ, A., ÇOBANOĞLU, İlker, & ALTUN, E. (2011). Developing Instructional Activities Based On Constructivist 7E Model: Chemistry Teachers’ Perspective. Journal of Turkish Science Education, 8(4), 18-28. https://tused.org/index.php/tused/article/view/596