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The ability of mathematical representation is an important ability possessed by prospective mathematics teachers, the ability of mathematical representation examined in this study include: visual representation, mathematical representation and representation of words. This study discusses the representation ability of mathematics education students in Calculus courses in terms of Early Mathematical Ability (KAM). The research subjects were all students who studied mathematics in semester IV which consisted of 3 classes. The third class is given different training, namely inquiry learning, guided inquiry and expository. The instrument used consisted of a mathematical initial ability test, and a mathematical representation ability test. Data analysis in this study used two-way ANOVA. The results of data analysis showed that the learning model used did not distinguish mathematical representation abilities, while KAM had a significant influence on students mathematical representation abilities. The learning model with KAM fully together influences the ability of students mathematical representation.