Yamin, Y. ., Napitupulu, E. E. ., & Harahap, F. . (2022). DEVELOPMENT OF MATHEMATICAL LKPD BASED ON SCIENTIFIC APPROACH TO IMPROVE STUDENTS' MATHEMATICAL PROBLEM SOLVING AT SD NEGERI 1 RIMO . Sensei International Journal of Education and Linguistic, 2(1), 165–187. https://doi.org/10.53768/sijel.v2i1.76