SANTOSA, Farah Heniati; INDRAWATI, Indrawati; SAMSURIADI, Samsuriadi; SAFITRI, Widya Sani. Development of a Geoboard Assisted Supplementary Learning Book on Triangles and Quadrilaterals to Enhance Students’ Mathematical Understanding Ability. Jurnal Pemikiran dan Penelitian Pendidikan Matematika (JP3M), [S. l.], v. 9, n. 1, p. 41–51, 2026. DOI: 10.36765/jp3m.v9i1.949. Disponível em: https://journal.rekarta.co.id/index.php/jp3m/article/view/949. Acesso em: 29 may. 2026.