NINGSIH, Dwi Kristina Lestari; NURAFIFAH, Sri; AYUMI, Nazwa; LODAN, Lusia. The Effect of Number Card Media on Mathematical Problem-Solving Skills Regarding Number Concepts Among Second-Grade Students at SDN 09 Tengah. Jurnal Inovasi Pendidikan MH Thamrin, [S. l.], v. 10, n. 1, p. 271–277, 2026. DOI: 10.37012/jipmht.v10i1.3553. Disponível em: https://journal.thamrin.ac.id/index.php/jipmht/article/view/3553. Acesso em: 22 sep. 2026.