[1]
Ibrahim, M. and Jamaludin, K.A. 2019. The roles of teacher and students via blended problem-based learning: Improving students’ mastery of three representation levels of chemistry. EDUCATUM Journal of Science, Mathematics and Technology. 6, 2 (Dec. 2019), 9–21. DOI:https://doi.org/10.37134/ejsmt.vol6.2.2.2019.