Abstract
<jats:p>Rafaerwar is a tradition of cleansing the sacred well (Parigi Pusaka) practiced by the Banda Lonthoir community in Central Maluku, Indonesia, and is held once every 10 years. This study aims to explore and reconstruct the scientific elements of the Rafaerwar tradition and align them with primary school natural science concepts. This qualitative descriptive study employed literature and field methods with an ethnoscience approach, conducted over three months in 2024 in Lonthoir Village, Central Maluku, Maluku Province, Indonesia. The study involved 15 informants, including traditional leaders, mosque imams, cultural experts, village heads, teachers, students, and residents. Data were collected through observation, interviews, and documentation and were analyzed qualitatively. Objects, individuals, events, and other associated elements were classified through equivalence analysis, reference synthesis, and informant insights. The findings indicate that the Rafaerwar tradition has potential as a source for strengthening natural science concepts in primary schools.</jats:p>