Interest in learning is an important factor in student learning success. This research aims to determine the level of learning interest of children aged 8-10 years towards modified petanque balls at SDN Pantai Batung. It is hoped that this modification can increase the potential for training and introduce students to the sport of petanque without reducing their enthusiasm and interest in learning. The method used was quantitative descriptive with a population of SDN Pantai Batung students and a sample of class IV students of 26 students. Sampling used purposive sampling technique. The instrument used in this research was a questionnaire. Based on the results obtained from data analysis, students' interest in modification tools is in the medium category with a percentage of 38.46%, the factors that really influence are intrinsic factors in the interest indicator 38.46% and extrinsic factors in the school indicator 42.31%. These results can be concluded that from the 26 students who were the research sample, it shows that the interest of children aged 8-10 years in modified petanque balls at SDN Pantai Batung is in the medium category.