Determining misconceptions on circle sub-learning area in primary school fifth class mathematics course syllabus

The purpose of this research is determining the misconceptions on ?circle sub-learning area? in primary school fifth class mathematics course syllabus.In this definitional research, a forty question achievement test that is developed after legality and reliability study is used as data gathering tool. Test is composed of two sections that are demographic characteristics and questions.This achievement test is exercised on 2010-2011 academic year second semester. Research space is composed of fifth class male and female students in Ankara province schools. Sampling is composed by 297 (% 51) female and 284 (% 49) male total of 581 students in seven primary schools determined with random sampling method that are attached to Ankara Metropolitan Municipality.For the statistical analysis of gathered data, frequency distribution, arithmetic averaging, standard deviation, Pearson correlation coefficient, t-test and ANOVA tests are used. Data is evaluated by SPSS 11.5 statistical analysis software.The results show that students have most misconceptions on radius and least misconceptions on center concepts on circle sub-learning area. It is concluded that there is no significant difference between male and female students on concept signification, number of read books have significant effects on concept signification and increasing success on mathematics increases the significations of concepts.