TY - JOUR TI - Levels of Elementary Mathematics Teacher Candidates Determination Levels of Image Sets ofFunctions in $R^2$ and $R^3$ AB - Purpose: This study aimed to reveal the relationship between elementary school mathematics teacher candidates'determination levels of image sets of functions in $R^2$ and $R^3$.Design/Methodology/Approach: This study was conducted with 49 elementary mathematics teacher candidates and thecorrelation design from quantitative approaches was used. For the given purpose, the data were collected by 2D and 3D tests.The 2D test was used to reveal the students' level of determining the image sets of the functions in $R^2$ and the 3D test was usedto reveal that in $R^3$. In the data collection process, the graphics of the questions in 2D and 3D tests drawn with the support ofGeoGebra were presented to the students together with the tests. Correlation analysis was used to compare the levels ofstudents in determining image sets of functions in $R^2$ and $R^3$. Findings: According to findings, it was found that there was a high level, positive, and significant relationship between thestudents' levels of determining the image sets of the functions in $R^2$ and $R^3$. Another conclusion about the study was that thestudents were more successful in determining the image sets of functions in $R^3$ than in $R^2$. This is thought to be a result of thedynamic feature of the GeoGebra software. Highlights: It was observed that the GeoGebra program was important in determining the image set of a function, especiallyin $R^3$. For this reason it is thought that using activities designed with the GeoGebra program in related lessons can be effectivein teaching two-variable functions. AU - Özkaya, Merve AU - ISLEYEN, TEVFIK DO - 10.24106/kefdergi.788157 PY - 2021 JO - Kastamonu Eğitim Dergisi VL - 29 IS - 2 SN - 1300-8811 SP - 390 EP - 402 DB - TRDizin UR - http://search/yayin/detay/463010 ER -