Suci Dahlya Narpila (Department of Mathematics Education, Universitas Islam Negeri Sumatera Utara, Medan, Indonesia)
Siti Salamah Br Ginting (Department of Mathematics Education, Universitas Islam Negeri Sumatera Utara, Medan, Indonesia)
Irma Sari Daulay (Study Program of Madrasah Ibtidaiyah Teacher Education, Sekolah Tinggi Agama Islam Barumun Raya (STAIBR) Sibuhuan, Padang Lawas, Indonesia)
Salimah Angreiny Nasution (MAN 2 Model Medan, Medan, Indonesia)
Astuti Ariani (SMP Negeri 5 Danau Panggang Kalimantan Selatan
Jl. Kali Sambujur Desa Tampakang Kec. Paminggir Kab. Hulu Sungai Utara Kalimantan Selatan, Indonesia)
Djamilah Bondan Widjajanti (Department of Mathematics Education, Universitas Negeri Yogyakarta, Indonesia)