Mathematics learning is still a problem for students. This can be seen from the fact that the class average score for mathematics is lower than the class average score for other fields of study. Out of the six existing children, only two, or 33.33%, had achieved learning mastery, while four, or 66.67%, had not mastered learning mathematics, especially addition and subtraction. The method used in this study uses quantitative research methods by conducting tests of student learning outcomes. The subjects of this study were students of class I, UPT SDN 107 Gresik, which consisted of six children. The type of research used is classroom action research. Classroom action research is action research conducted in the classroom that concerns problems faced by teachers, improves the quality of processes (practices) and learning outcomes, and tries new things in the field of learning in order to improve the quality of processes and learning outcomes. The results of this study show that the use of math card media can improve student learning outcomes on the subject of adding and subtracting numbers in class I, UPT SDN 107 Gresik students. Based on the results of the research that has been done, it can be concluded that there is a significant influence between the Mathca card media and the learning outcomes obtained by students, with a completeness of 5 out of 6 students, or 83.33%.
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