In this study, it was aimed to determine how students' schemes were in fractions. The research was performed on 12 students studying in one of Turkey's western state secondary school 7th grade students. The study is a case study. The data were collected through one-on-one interviews and the collected data were analyzed using descriptive analysis. In the study, students were given various fractions with length, area, and cluster models, and it was revealed how students used mental mechanisms of shredding, peer breaking, simple fractional unit fractions, multiplicative composition at the same time. When the data were analyzed, it was determined that the students had difficulties in the questions related to the cluster model and especially the mental schemes related to the mental composition of the multiplicative composition were problematic. In the light of the findings;, it may be recommended to use different models of the fraction, especially the cluster model, and to focus on the meaning of concepts instead of memorizing rules in teaching practices.
Fraction, Fraction Schemes, Middle School Students