Reflective thinking enables the individual to realize his or her own learning and thinking processes, reflect the weaknesses and strengths in them and find the suitable development and renewable methods for weak elements, and also further strengthen the strong elements. This study is
built upon research regarding whether or not the acquisition of this thinking ability by 5th class students in primary education can affect their metacognitional awareness levels. It was found that the activities developing reflective thinking on the experiment group meaningfully increased
the metacognitional awareness of students in contrast to the control group. In addition, no meaningful difference was detected between metacognitional awareness levels of students and their gender.