Esti Rahayu (SMP Negeri 3 Pengadegan
Desa Pasunggingan, Kabupaten Purbalingga, Jawa Tengah, Indonesia)
Hartono Hartono (Jurusan Pendidikan Matematika, Universitas Negeri Yogyakarta,
Jalan Colombo No. 1, Karangmalang, Yogyakarta 55281, Indonesia)
Muhammad Afdhal (Program Studi Pendidikan Matematika, Program Pascasarjana, Universitas Negeri Yogyakarta, Indonesia)
Sugiman Sugiman (Program Studi Pendidikan Matematika, Program Pascasarjana, Universitas Negeri Yogyakarta)
Siti Nuriyatin (Program Studi Pendidikan Matematika, Universitas Negeri Yogyakarta
Jalan Colombo No 1, Karangmalang, Yogyakarta 55281, Indonesia)
Hartono Hartono (Program Studi Pendidikan Matematika, Universitas Negeri Yogyakarta
Jalan Colombo No 1, Karangmalang, Yogyakarta 55281, Indonesia)
Nana Sumarna (Department of Primary School Teacher Education, Faculty of Teaching and Educational Sciences, Halu Oleo University, Indonesia)
Rusnawati Rusnawati (Study Program of Social Sciences, Faculty of Teacher Training and Educational Sciences, Halu Oleo University, Indonesia)
Ice Rahmawati (The Education Office of Kendari City, Southeast Sulawesi, Indonesia)