SURONO, Wahid; FIRANDHI, Vikram Yuda Octa; MINARTI, Sri. Improving students’ understanding of plane geometry concepts through simple concrete media among fifth-grade students at sdn 3 balai karangan. JURNAL PENDIDIKAN DASAR, [S. l.], v. 14, n. 1, p. 1–8, 2026. DOI: 10.46368/jpd.v14i1.4965. Disponível em: https://www.jurnalstkipmelawi.ac.id/index.php/JPD/article/view/4965. Acesso em: 28 jun. 2026.