Azizah, N.I. et al. 2024. Development of Electronic Teaching Materials Based on Contextual Teaching and Learning (CTL) Approach to Improve High School Students’ Mathematical Problem Solving Skills. Jurnal Paedagogy. 11, 3 (Jul. 2024), 637–646. DOI:https://doi.org/10.33394/jp.v11i3.12108.