Ihsan, Muhammad, Saprizal Hadisaputra, Agus Ramdani, and Agil Al Idrus. 2020. “COMPUTER BASED CONCEPT UNDERSTANDING INSTRUMENS IN CHEMICAL LEARNING”. JURNAL INOVASI PENDIDIKAN DAN SAINS 1 (1), 26-29. http://ejournal.unwmataram.ac.id/JIPS/article/view/253.