Rahmi Wahyuni, Dian Armanto, Edy Surya. Designing, Validating, and Implementing the Seumapa Based Problem Solving (SBPS) Model Assisted by Flipbooks: An Educational Design Research Approach in Indonesian Elementary Mathematics. IJSE [Internet]. 2026 Jun. 29 [cited 2026 Oct. 24];41(2):134-59. Available from: https://mail.internationalsped.com/index.php/ijse/article/view/3332