Pratiwi, W. D., Zulkardi, Z., Putri, R. I. I., & Hiltrimartin, C. (2024). Developing problem-based learning worksheet of relations and functions topic to support students’ conceptual understanding. Jurnal Gantang, 9(2), 255–264. https://doi.org/10.31629/jg.v9i2.7564