Hafni, M., Syahputra, E. and Khairani, N. 2021. Development of Interactive Learning Based Discovery Learning to Improve Mathematic Representation and Self-Efficacy Abilities of MAN 1 Medan Students. Jurnal Cendekia : Jurnal Pendidikan Matematika. 5, 2 (May 2021), 1201-1213. DOI:https://doi.org/10.31004/cendekia.v5i2.575.