Azizah Sormin, M. ., Sormin, D. ., Rahma Yanti Sormin, M. ., Kholijah, A. ., & Siregar, I. . (2023). Development of Problem Based Mathematics Module (Calculating Professional Zakat) to Improve Student’s Mathematic Problem Solving. KnE Social Sciences, 8(4), 292–298. https://doi.org/10.18502/kss.v8i4.12910