The development of grade 4 students' number senses related to fractions: An action research

The aim of this study is to develop the number sense of the 4th grade students on the subject of fractions. The study group of the study, which was carried out based on the action research design, consists of three students studying in the city center of Denizli, determined by the criterion sampling method. The students were determined according to the scores they got from the number sense test developed by the researcher. Action plans were created and implemented in order to develop the number sense of the students on the subject of fractions. During the implementation process, the progress of the students was followed and rearrangements were made in the subjects deemed necessary. After the application, number sense was applied again and the development of number sense in students was examined. Considering the results of the research, it was observed that the students' number senses for the subject of fractions developed in the direction of understanding the meaning and size of fractions, equivalent representation, use of reference point and estimation components. Keywords: Number sense, elementary school mathematics, fraction