de Aguiar Costa J. FEDATHI SEQUENCE IN THE TEACHING OF SPECTROSCOPY AND ASTRONOMY: A QUALITATIVE ANALYSIS OF MEANINGFUL LEARNING IN THE 9TH GRADE OF ELEMENTARY SCHOOL. GEI [Internet]. 24 de junho de 2026 [citado 16 de outubro de 2026];6(04):400-15. Disponível em: https://www.periodicojs.com.br/gei/article/view/3073