Akman, E. (2019). The investigation of the effects of a virtual reality application developed for fractions in the mathematics lessons of elementary school considering some different variables. Doctoral Dissertation. Amasya University, Institute of Social Science. Amasya, Turkey.
Akman, E. (2013). Analysis of knowledge structures about light concepts of elementary students according to conceptual change theories. Master Thesis. Ondokuz Mayıs University, Institute of Educational Science. Samsun, Turkey.