de Aguiar Costa, J. . (2026). FEDATHI SEQUENCE IN THE TEACHING OF SPECTROSCOPY AND ASTRONOMY: A QUALITATIVE ANALYSIS OF MEANINGFUL LEARNING IN THE 9TH GRADE OF ELEMENTARY SCHOOL. Revista GĂȘnero E Interdisciplinaridade, 6(04), 400-415. https://doi.org/10.51249/gei.v6i04.3073