Othmane Fahim |||| Institut National de Statistique et d'Economie Appliquée, Maroko

Tang Minh Dung |||| Ho Chi Minh City University of Education, Vietnam

María Cecilia Manzione Patrón |||| Instituto de Profesores Artigas, Uruguay

Oluwole Sikiru Banjo |||| Tai Solarin University of Education, Nigeria

Dussadee Somjaiwang |||| Kanchanaburi Rajabhat University, Thailand

José Alberto Del Puerto-Flores |||| Universidad Panamericana, Venezuela

Jackson Pasini Mairing |||| Pendidikan Matematika, Universitas Palangka Raya, Indonesia

Irianto Aras |||| Pendidikan Matematika, Universitas Borneo Tarakan, Indonesia

Hasnawati |||| Pendidikan Matematika, Universitas Halu Oleo, Indonesia