The Impact of PBL-Based E-Learning on Critical Thinking and Mathematical Communication in Ethnomathematics-Based Pythagorean Learning. Jurnal Ilmiah Pendidikan [Internet]. 2026 Jan. 18 [cited 2026 Apr. 18];5(1):51-6. Available from: https://jurnal.arkainstitute.co.id/index.php/educenter/article/view/1931