Science and technology have been changed very rapidly in the 21st century. This change in science and technology has made it necessary for people to gain different skills.These skills can be listed as creativity, critical thinking, problem solving and effective usage of technology, information management, cooperation and communication. Some teaching models are needed to enable students to acquire and develop these skills. STEM is an acronym for the fields of Science, Technology, Engineering and Math; and includes effective integration of them STEM education, which aims to enable students to transfer the theoretical knowledge that they learn in school to daily life, to handle different disciplines as a whole and to gain skills along with knowledge, has started to become popular recently. In this study, it is aimed to examine the articles and graduate theses in national literature about STEM education since 2010. Within the scope of this aim of the study, 45 master and doctoral theses and 52 journal articles which are reached from the national academic data base (ULAKBIM) and Higher Education Institution National Thesis Centre (YÖK) were selected for analysis. The studies were analyzed in terms of publication year, the language of publication, research methods, dependent variables, data collection tools, sampling groups, data analysis methods and represented with tables. With the findings of this research, it is expected to give an overview of the studies on STEM education in our country and to shed light on the new studies.

The aim of this study is to obtain information about students' definitions, mistakes, misconceptions, and van Hiele geometry thinking levels by using the definitions of 4th grade students for geometric shapes of rectangle, square, isosceles triangle, equilateral triangle, and scalene triangle. The study was carried out with 156 primary school 4th grade students. In the study, the case design, one of the qualitative methods, was used. Students were asked to describe geometric shapes. It was observed that most of the 4th grade students participating in the study were in the visualization stage of van Hiele. There are very few definitions of the hierarchical structure in the study. Most correct definitions are in the partitional form. In the study, misconceptions were detected in some of the students.

The aim of this study is to obtain information about students' definitions, mistakes, misconceptions, and van Hiele geometry thinking levels by using the definitions of 4th grade students for geometric shapes of rectangle, square, isosceles triangle, equilateral triangle, and scalene triangle. The study was carried out with 156 primary school 4th grade students. In the study, the case design, one of the qualitative methods, was used. Students were asked to describe geometric shapes. It was observed that most of the 4th grade students participating in the study were in the visualization stage of van Hiele. There are very few definitions of the hierarchical structure in the study. Most correct definitions are in the partitional form. In the study, misconceptions were detected in some of the students.