Hazal Serpen, one of the master students in our department, defended her thesis entitled "Preschool Movement Education within the Framework of Ecological Systems Theory", which she conducted under the supervision of Assoc. Prof. Dr. Serap Sevimli Çelik, and was found to be successful on 4th September, 2023. We would like to thank our student's advisor, Assoc. Prof. Dr. Serap Sevimli Çelik, and committee members Assoc. Prof. Dr. Irmak Hürmeriç Altunsöz and Assoc. Prof. Dr. Menekşe Boz for their valuable contributions. We wish our student all the success in the future.