1. Siirt University, Department of Mathematics Education, Siirt, Turkey
2. Institute for Groundwater Studies, Faculty of Natural and Agricultural Sciences, University of the Free State, South Africa
3. ALTSO Vocational School, Alanya Alaaddin Keykubat University, Antalya, Turkey
4. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
5. IT4Innovations, VSB–Technical University of Ostrava, Ostrava-Poruba 70800, Czech Republic