Özet:

In the framework of the research, three different geometric modeling problem events were carried out in a three-week period in a state university's geometry teaching course. As part of this comprehensive study in the research of primary mathematics teachers' candidates "Is the base or the height half?" The ability to model the geometry problem in the process of solving is studied. The participants of the study were selected according to the aim of the sampling method and thirty-seven primary mathematics teaching is the fourth-class student. The data of the study was collected through the worksheets and the concrete geometric models prepared by the teacher candidates. The participants were given a geometric problem status that contains the evidence of the field formula of the triangle and the teacher candidates were asked to make a mathematical solution and submit them in the form of geometric concrete models. The data was analyzed through the rubric developed in terms of the mathematical understanding of the teacher candidates, the processes of converting geometric shapes and the geometric model they design. The findings showed that most teaching candidates correctly solved the geometric modeling problem and created functional models. In addition, teaching candidates have taken into account their previous mathematical knowledge while creating concrete geometric mathematical models and employed their spatial skills.

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