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Kemal Özgen, Burcu Aparı, Yılmaz Zengin. Problem Posing Based Learning Approaches of Eighth Grade Students: Implementation of Active Learning Framework Supported by GeoGebra. TURCOMAT [Internet]. 2019Sep.10 [cited 2024Nov.22];10(2):501-38. Available from: https://turcomat.org/index.php/turkbilmat/article/view/212