This study aims to improve the learning outcomes of Science (IPAS) on Cultural Diversity through the use of Indonesian Cultural Exploration media for fourth-grade students of SDN Karangbesuki 1 Malang. This study uses the Classroom Action Research (CAR) method which is implemented in two cycles through the stages of planning, action implementation, observation, and reflection. The research subjects were 28 fourth-grade students of SDN Karangbesuki 1 Malang in the even semester of the 2025/2026 academic year. Analysis of learning outcomes was carried out based on the number of students who participated in the evaluation at each stage of the study. Learning actions were implemented using the Contextual Teaching and Learning (CTL) approach assisted by Indonesian Cultural Exploration media consisting of cultural maps and cultural cards. In cycle I, students studied in groups using maps per island region and cultural cards, while in cycle II students studied individually using a large map of Indonesia and simplified cultural cards. The results of the study showed an increase in student learning outcomes in each cycle. The average student score increased from 72.22 in the pretest to 80.38 in the posttest of cycle I and increased to 95.56 in the posttest of cycle II. The percentage of learning completion also increased from 55.56% in the pretest to 61.54% in cycle I and reached 100% in cycle II. The results of the study indicate that the Indonesian Cultural Exploration media combined with the CTL approach is effective in improving the learning outcomes of Social Sciences on Cultural Diversity material for fourth-grade students of SDN Karangbesuki 1 Malang.