Almaghfiroh, V., Afandy, M.I. and Marhayati, M. 2023. Learning sets theory using gaple cards: a study of east java ethnomathematics . Jurnal Pengembangan Pembelajaran Matematika. 5, 2 (Aug. 2023), 153–163. DOI:https://doi.org/10.14421/jppm.2023.52.153-163.