Amalia, L. ., M. Makmuri, and L. E. . Hakim. “Learning Design: To Improve Mathematical Problem-Solving Skills Using a Contextual Approach”. JIIP - Jurnal Ilmiah Ilmu Pendidikan, vol. 7, no. 3, Mar. 2024, pp. 2353-66, doi:10.54371/jiip.v7i3.3455.