ANALISIS KESULITAN BELAJAR SISWA PADA MATERI PENJUMLAHAN MATEMATIKA DI SEKOLAH DASAR KELAS 3 SD MENGGUNAKAN MODEL PEMBELAJARAN CTL (CONTEXTUAL TEACHING AND LEARNING). JPPD: Jurnal Penelitian Pendidikan Dasar, [S. l.], v. 3, n. 02, p. 131–141, 2026. Disponível em: https://journal.lumiverapublishing.org/index.php/jppd/article/view/139. Acesso em: 28 oct. 2026.