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Sihaloho GT, Sitompul H, Appulembang OD. PERAN GURU KRISTEN DALAM MENINGKATKAN KEAKTIFAN SISWA PADA PROSES PEMBELAJARAN MATEMATIKA DI SEKOLAH KRISTEN [THE ROLE OF CHRISTIAN TEACHERS IN IMPROVING ACTIVE LEARNING IN MATHEMATICS IN A CHRISTIAN SCHOOL]. JOHME [Internet]. 2020 May 12 [cited 2025 Nov. 20];3(2):200-15. Available from: https://ojs.uph.edu/index.php/JOHME/article/view/1988