Sih Mustika G, Astuti D, Aprilia A, Yuliandari Y. Implementation of the Problem Based Learning Model Assisted with Google Sites to Improve Concept Understanding and Reduce Students’ Mathematical Anxiety. juhu [Internet]. 2024Sep.28 [cited 2026Apr.21];5(3):489-511. Available from: https://www.academicareview.com/index.php/jh/article/view/170