KUMALASARI , Shera Eka; SUMAJI, Sumaji; RAHAYU, Ratri. Effect of Project-Based Learning with an Ethnomathematics Approach on Junior High School Students’ Mathematical Problem-Solving Ability. Kognitif: Jurnal Riset HOTS Pendidikan Matematika, [S. l.], v. 6, n. 3, p. 1424–1437, 2026. DOI: 10.51574/kognitif.v6i3.5607. Disponível em: https://etdci.org/journal/kognitif/article/view/5607. Acesso em: 17 sep. 2026.