Using concrete materials makes students active, provides richer learning environments, Concrete materials make mathematics teaching enjoyable and increase student’s motivation. For this reason, for better understanding of mathematical concepts in mathematics education by the students it is essential to benefit from concrete materials. The aim of the study is to examine prospective middle school mathematics teachers’ skills about using concrete materials in mathematics teaching. In this study, case study method was used as qualitative research approach. The participants of the study were determined by purposeful sampling method. Accordingly, a total of 45 second grade prospective teachers enrolled in Education Faculty of a public university and had taken the Instructional Technologies and Material Design Lesson before were included in the study. In the analysis of data, the video records of prospective teachers’ lecturing collected by means of observation were transcribed. The documents made were analyzed using qualitative analysis techniques. In light of the results of the study, it was observed that most of the prospective teachers could not use concrete materials effectively and appropriately for their purposes. Although many of prospective teachers had wanted to use the concrete materials for the purpose of teaching of the subject, they could not go beyond using for the purpose of practicing. Within the prospective teachers who used concrete materials effectively it was observed that they used a limited amount of materials