Development of Teaching and Learning Materials for Geometry through Problem-based Learning Model. Jurnal Teknologi, [S. l.], v. 63, n. 2, 2013. DOI: 10.11113/jt.v63.2024. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/2024.. Acesso em: 22 jul. 2024.