Hidayat, Makmun. “Improving Students’ Spatial Thinking Ability by Applying The ‘Blended Learning-Rigorous Mathematical Thinking’ Model in Learning”. 12 Waiheru 8, no. 1 (July 1, 2022): 104–113. Accessed February 23, 2025. https://12waiheru.kemenag.go.id/index.php/journal/article/view/13.