NWANKWO, Amaka Loretta; UGWU, Theresa Ukamaka; UKALA, Geoffrey; BENSON, Ozichi Okwukwe. The effect of hands-on activity and problem-based learning on achievement of biology students in Enugu state. Inornatus: Biology Education Journal, [S. l.], v. 4, n. 1, p. 46–56, 2024. DOI: 10.30862/inornatus.v4i1.574. Disponível em: https://journalfkipunipa.org/index.php/ibej/article/view/574. Acesso em: 10 jun. 2026.