Hasan, R. T. S., Machmud, T., Pauweni, K. A. Y. and Ismail, S. (2024) “Development of the ‘GAULL’ Mathematics Learning E-Module Using Crossword Games on Flat-side Space Buildings”, Numerical: Jurnal Matematika dan Pendidikan Matematika, 8(1), pp. 125–138. doi: 10.25217/numerical.v8i1.4951.