Sipayung, Tetty Natalia, Department of Mathematics Education, Catholic University of Saint Thomas, Indonesia (Indonesia)
Sirait, Albert Pauli, Faculty of Education Science, Universitas Negeri Medan, Indonesia (Indonesia)
Sirait, Aprina, Master Student in Universitas Negeri Medan (Unimed) (Indonesia)
Sirait, Magdalena, Master Student in State University of Medan (Unimed), (Indonesia)
Siregar, Ajizah, Universitas Negeri Medan, Indonesia (Indonesia)
Siregar, Anggi Chairunnisa, Postgraduate Program of Universitas Negeri Medan (Indonesia)
Siregar, Anggi Chairunnisa
Siregar, Epi Supriyani, Universitas Pembinaan Masyarakat Indonesia Medan, Indonesia (Indonesia)
Siregar, Erni Hanim, Teacher in Islamic Junior High Public School (MTsN 1) Simalungun, (Indonesia)
Siregar, Hotma, FKIP Universitas Muhammadiyah Sumatera Utara (Indonesia)
Siregar, Iskandarsyah, Universitas Negeri Medan (Indonesia)
Siregar, Iskandarsyah
Siregar, Masitowarni, Universitas Negeri Medan, Indonesia (Indonesia)
Siregar, Masitowarni, Universitas Negeri Medan, Medan (Indonesia)
Siregar, Masitowarni
Siregar, Masitowarni, Universitas Negeri Medan (Indonesia)
Siregar, Nofi Marlina
Siregar, Nur Aisyah
Siregar, Riky Gunawan, Master Student in Universitas Negeri Medan (Unimed), Medan (Indonesia)
Siregar, Rosdiana, Universitas Negeri Medan, Indonesia (Indonesia)
Siregar, Rosdiana
Siregar, Ruth Maria
Siregar, Siti Fatimah
Siregar, Siti Hazizah
Siregar, Yeni Saufina, Postgraduate Program in Education Administration, Universitas Negeri Medan, Indonesia (Indonesia)

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