PENGARUH PENDEKATAN OPEN ENDED TERHADAP HASIL BELAJAR MATEMATIKA SISWA KELAS VII SMP NEGERI 1 LEMBO PADA MATERI SEGITIGA. SOSCIED, [S. l.], v. 8, n. 1, p. 24–32, 2025. DOI: 10.32531/jsoscied.v8i1.908. Disponível em: https://jurnal.poltekstpaul.ac.id/index.php/jsoscied/article/view/908. Acesso em: 19 apr. 2026.