1. Department of Elementary School Teacher Education, Faculty of Education, Universitas Negeri Padang, Air Tawar Padang City, INDONESIA
2. Department of Physics Education, Faculty of Tarbiyah and Teacher Training, UIN Sunan Gunung Djati, Bandung, INDONESIA
3. Department of Curriculum and Instructional Technology, Faculty of Education, Universiti Malaya, Kuala Lumpur, MALAYSIA
4. Department of Elementary School Teacher Education, Faculty of Education, Universitas Lambung Mangkurat, Banjarmasin, INDONESIA