Harefa D. STRENGTHENING MATHEMATICS AND NATURAL SCIENCES EDUCATION BASED ON THE LOCAL WISDOM OF SOUTH NIAS: INTEGRATION OF TRADITIONAL CONCEPTS IN MODERN EDUCATION. HAGA [Internet]. 2024Nov.7 [cited 2025Jul.7];3(2):63-9. Available from: https://jurnal.uniraya.ac.id/index.php/HAGA/article/view/2347