PERBANDINGAN KEMAMPUAN BERFIKIR KRISTIS SISWA MENGGUNAKAN PROBLEM BASED LEARNING DAN CONTEXTUAL TEACHING AND LEARNING. SPEKTRA [Internet]. 2024 Apr. 30 [cited 2026 May 28];10(1):128-42. Available from: https://ojs.unsiq.ac.id/index.php/spektra/article/view/11165