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Saragih, Dorezky and Rajagukguk, Waminton and Mansyur, Abil (2018) THE INFLUENCE OF PROBLEM BASED LEARNING ON THE MATHEMATICAL PROBLEM SOLVING AND CONNECTION ABILITY OF STUDENTS IN SMP SWASTA ASSISI SIANTAR. IOSR Journal of Research & Method in Education, 08 (02). pp. 24-30. ISSN 2320-7388-p, 2320-737X-p