Halomoan H, Syarifuddin H, Suryana D. Improvement of Motivation and Ability to Solve Problem in Mathematical Learning Using Problem Solving Method in Class VI Sdn 07 Koto Alam Kecamatan Palembayan. IJEDS [Internet]. 2019 Jun. 1 [cited 2026 Apr. 25];1(2):308-11. Available from: https://ijeds.ppj.unp.ac.id/index.php/IJEDS/article/view/200