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Ramli R. Upaya Meningkatkan Keaktifan dan Hasil Belajar Matematika Siswa Melalui Model Problem Based Learning. DIDAK TIKA [Internet]. 2021 Feb. 4 [cited 2026 Jun. 14];27(2):102-13. Available from: https://journal.umg.ac.id/index.php/didaktika/article/view/2258