1.
et. al. PDGKA-M. The Effect Of Using The THELEN Model (Group Investigation) In Solving Mathematical Problems Among Female Students Of The First Intermediate Grade In Mathematics. TURCOMAT [Internet]. 2021Apr.16 [cited 2025Sep.12];12(7):2920-7. Available from: https://textitlejournal.com/turcomat.org/index.php/turkbilmat/article/view/3887