The aim of this paper is to investigate the universal values which are used in the classroom communication bye preschool teachers. The working group of the study consists of four pre-school teachers working in two primary schools and one independent pre-school in Bingol and Tekirdag's town Hayrabolu. As a means of data collection, the universal values-used by pre-school teachers in the classroom- has been observed by "Unstructured and Non-participant Observation Technique". In accordance with the purpose of this study, teachers' behaviors were noted and their verbal expressions were recorded with the help of tape recorder. In order to analyze the research data, Content Analysis-one of the qualitative research methods-was used. The report of the sound recordings consisted of 78 pages. According to the findings of the research, 12 different values were used by teachers in classroom activities. Among these values, the most commonly used universal values are "Politeness Cooperation, Responsibility, Respect and Patience".

graduate studies related to emotional and behavioral problems were published in the Department of Child Mental Health / Child Adolescent Mental Health and Diseases (30.34%). The descriptive model (42.76%) was the most used model and pattern in the theses examined; when the method of the dissertations examined, it was seen that the quantitative research was the most used method (67.59%).

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Gaming is a natural process for the child, and with the play therapy technique used in this process, opportunities are offered to the child to express their problems and emotions by playing. Play therapy is used in many studies with children. The number of studies conducted on the effectiveness of play therapy in Turkey is increasing with each passing day. In this study, experimental graduate studies related to the play therapy education program from the past to the present (1987-2020) were examined and the results were brought together. A total number of 38 master's and 8 doctoral studies were reached in the YÖK (Council of Higher Education) thesis center related to the subject, but only 7 studies in accordance with the inclusion criteria were analyzed with metaanalysis method. While examining the postgraduate studies, care was taken toward the existence of an experimental and control group in which play therapy was applied. The studies in which play therapy was applied to the experimental group but not the control group were included in this study. In order to calculate the effect sizes, average (X), standard deviation (SS) and sample size (N) values from master's theses were processed in the Excel program. Later, CMA (Comprehensive Meta Analysis) statistical program was used for the analysis required for the study, "Hedges's g" was used to calculate the effect size and the Excel program was used for the collection-processing of the data. As a result of the research, it was found that the effect size of play therapy on children's behaviors has an excellent effect size. It was concluded that 5 of the studies included in the study were excellently effective, 1 was moderately effective, and 1 was broadly effective. These limited studies provide information that play therapy has a positive effect on children.