Syaipia Laila Nur Fitriani, Dede Trie Kurniawan, Mega Laeni. Implementation of the Problem Based Learning Model with Realia Media to Improve Elementary School Students’ Critical Thinking Skills. Elm [Internet]. 2026 Jul. 26 [cited 2026 Jul. 27];4(1):13-26. Available from: https://elementaria.my.id/index.php/e/article/view/109