PRINCIPLES OF ORGANIZING PROJECT-BASED NATURAL SCIENCE ACTIVITIES IN PRIMARY SCHOOL. Physical Culture and Sport: Scientific Perspective, [S. l.], v. 1, n. 1, p. 136–144, 2025. DOI: 10.31891/pcs.2025.1(1).18. Disponível em: https://pcs.khmnu.edu.ua/index.php/pcs/article/view/346. Acesso em: 27 jan. 2026.