It is crucial to first expose the present gender beliefs of children before addressing age-appropriate sexual education starting at these ages. This will help children more easily become aware of gender differences in the preschool era and adopt roles appropriate for their gender. However, when the preschool education programs of the Ministry of National Education are examined, it is seen that the concept of "sexual education" is not included enough and the academic studies in this field during the preschool period are limited. This study, which aims to examine the perceptions of the gender of children aged 3-6 years in terms of various variables, was designed as “mixed-method research." Mixed methods require combining or integrating qualitative and quantitative research and their data in a study. Mixed methods research is a research approach that includes the use of different research designs that include philosophical assumptions and theoretical frameworks, the collection of qualitative and quantitative data, and the integration of these two data types. In addition, the mixed model moves away from the weaknesses of quantitative and qualitative research methods, providing more data and a broader perspective (Creswell, 2017). The data were obtained with the "Gender Perceptions Interview Form for Children Aged 3-6." The research findings revealed that the gender perceptions of children aged 3-6 are focused on the choice of clothes-clothing and play toys, and physical appearance. When analyzed in terms of demographics, it was determined that there was a significant difference only in terms of the education level of the mother and father.