[1] Munte, B. 2019. The Effect of Cooperative Model “Jigsaw Type” in Improving Students’ Achievement at Christian Education Subject Case: Grade XII IPA 1-2 SMA Negeri 1 Tebing Syahbandar. International Journal of English Literature and Social Sciences. 4, 2 (2019), 344–350. DOI:https://doi.org/10.22161/ijels.4.2.24.