DR EPHRAIM J. GONGDEN. Effectiveness of Flipped Classroom Approach (FCA) on Students’ Achievement and Retention in Chemical Equilibrium in High Schools in Jos, Plateau state – Nigeria. International Journal of Educational Excellence and Innovation, india, v. 2, n. 02, p. 47–61, 2025. DOI: 10.5281/zenodo.14899784. Disponível em: http://universalscholars.org/index.php/ijeei/article/view/64.. Acesso em: 17 sep. 2025.