Selim Taş, Sabahattin Deniz. Prediction Concerning the Learned Helplessness about Mathematics of the 8th Grade Students: Problem-Solving Skills and Cognitive Flexibility. TURCOMAT [Internet]. 2018Dec.17 [cited 2025Sep.12];9(3):618-35. Available from: https://textitlejournal.com/turcomat.org/index.php/turkbilmat/article/view/189