Ching, W. C., & Che Ahmad, C. N. (2013). Investigation of Constructivist Learning Enviroments and Educational Facility in Science Classrooms: Kajian Pengintegrasian Persekitaran Pembelajaran Konstruktivis dan Kemudahan Pendidikan dalam Bilik Darjah Sains. Journal of Science and Mathematics Letters, 1, 18–27. Retrieved from https://ejournal.upsi.edu.my/index.php/JSML/article/view/4303