Azizah Yusra Amaliyah, Syahrina Anisa Pulungan, and Filzah Syaurah Dhabitah. “Developing a Connected Mathematics Project-Based Mathematics Textbook to Improve Elementary School Students’ Conceptual Understanding and Self-Confidence”. Journal of Practice Learning and Educational Development, vol. 5, no. 4, Dec. 2025, pp. 1206-1, doi:10.58737/jpled.v5i4.879.