The Effectiveness of Using Problem-Based Learning-Based LKPD to Improve Students’ Mathematical Problem- Solving Skills. ABDIMPACT: Journal of Community Service and Impact, [S. l.], v. 1, n. 1, p. 11–18, 2026. Disponível em: https://journal.uniqhba.ac.id/index.php/abdimpact/article/view/1147. Acesso em: 30 jul. 2026.