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Mery Lia Anggraenia, Zayyadi M. Students’ Questioning Skills on Systems of Linear Equations in Two Variables through Problem Based Learning. PMEJ [Internet]. 2024 Oct. 15 [cited 2024 Nov. 22];7(2):93-9. Available from: http://ejournal.unikama.ac.id/index.php/pmej/article/view/10355