Kuswara, R. D., Almazroei, E. E., & Isnawan, M. G. (2024). Online didactical design for subtraction fractions: A didactical design research through lesson study activities. International Journal of Didactic Mathematics in Distance Education, 1(1), 37–46. https://doi.org/10.33830/ijdmde.v1i1.7772