DR. ELENA VANCE; PROF. SAMUEL J. CARTER. Comparative Efficacy of Heuristic, Discovery-Based, and Manipulative-Aided Instruction on Student Achievement in Middle School Geometry. Current Research Journal of Pedagogics, [S. l.], v. 6, n. 09, p. 1–11, 2025. Disponível em: https://masterjournals.com/index.php/crjp/article/view/2169. Acesso em: 5 sep. 2025.