Nurhidayah, Dwi, Egidia Ikmawati, and Wahyudi Wahyudi. 2024. “Watson’s Error Category: Analysis of Student Errors in Solving Algebraic Calculation Operation Problems”. Journal of Education and Learning Mathematics Research (JELMaR) 5 (2), 206-16. https://doi.org/10.37303/jelmar.v5i2.3807.