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Dwijayanti AASS, Wiarta IW. Problem Based Learning Using Open Ended Questions Improves Students’ Mathematical Critical Thinking Ability in Elementary Schools. TSCJ [Internet]. 2024 Jul. 10 [cited 2024 Dec. 20];7(1):167-74. Available from: https://ejournal.undiksha.ac.id./index.php/TSCJ/article/view/78033