Novi Tari Simbolon. Development of Karo Culture-Based Problem-Based Learning Model Assisted by Information Technology to Improve Students’ Collaborative Skills and Mathematical Problem-Solving. IJSE [Internet]. 2026 Oct. 16 [cited 2026 Oct. 20];41(24s):599-616. Available from: https://mail.internationalsped.com/index.php/ijse/article/view/6990