Samsuriadi S. Didactic Design of Mathematics Learning to Improve Conceptual Understanding of Triangles and Quadrilaterals Based on Green Numeracy at a Private Islamic Junior High School. pan.int.j [Internet]. 2026 Jun. 26 [cited 2026 Sep. 8];4(1):98-109. Available from: https://nakiscience.com/index.php/pij/article/view/328