ANALYSIS OF OPPORTUNITY-TO-LEARN GEOGRAPHIC INFORMATION SYSTEM FROM TWO GEOGRAPHY TEXTBOOKS IN SOUTH AFRICAN SECONDARY SCHOOLS. JOURNAL OF EDUCATIONAL RESEARCH ON CHILDREN, PARENTS & TEACHERS, [S. l.], v. 6, n. 2, p. 108–121, 2025. Disponível em: https://ercptjournal.com/index.php/ojs/article/view/156. Acesso em: 8 nov. 2026.