Bahri, Silvi, Zaenuri Zaenuri, and YI Sukestiyarno. 2018. “K Problem Solving Ability on Independent Learning and Problem Based Learning With Based Modules Ethnomatematics Nuance”. Unnes Journal of Mathematics Education Research 7 (1), 218-24. https://journal.unnes.ac.id/sju/ujmer/article/view/25785.