Hentihu V. THE EFFECTIVENESS OF PEER TUTOR LEARNING MODEL ON MATHEMATICS LEARNING OUTCOMES ON SOCIAL ARITHMETIC MATERIAL: (Efektifitas Model Pembelajaran Tutor Sebaya Terhadap Hasil Belajar Matematika Pada Materi Aritmatika). Ujes [Internet]. 2021Apr.2 [cited 2025Nov.17];2(1):44-52. Available from: http://ejournal-uniqbu.ac.id/index.php/ujes/article/view/114