This study is based on the principle that the mathematical anxiety in preservice kindergarten teachers-tobe should be removed and they should be encouraged towards mathematics. It is expected from teachers-to-be who are able to construct this confidence to prepare exercises improving mathematical ideas for their students. This study was carried out with second year students of Preservice Teaching Section, Primary School Teaching Department, Faculty of Education, Uludağ University who taking pre-school mathematics. The study continued for 14 weeks (1 semester). The researcher of this study gave the course. The training was realised as 1 hour of basic mathematics and 2 hours of pre-school mathematics teaching within one week. An attitude test was applied to the pre-service teachers-to-be both the beginning and at the end of training. In addition, several personal questions related with the course were asked to these pre-service-teachers-to be. In this study, it is concluded that pre-service-teachers-to-be have developed positive attitudes and are encouraged towards mathematics and their success to prepare exercises on mathematical subjects, such as classification, ordering, comparison, pairing, numbers, geometric shapes, calculation, measures, space perception, problem-solving and developing creativity, for pre-school kindergarten students has improved.