I. N. Diana, O. A. . Suciptaningsih, and A. . Mashfufah, “Osing House Ethnomathematics LKPD Development to Strengthen Elementary Students’ Flat Shape Area Comprehension”, didaktika.j.kep, vol. 15, no. 2 Mei, pp. 3141–3152, May 2026, doi: 10.58230/27454312.3897.