Ulfa Fauziah, H. , Sekarsari , P. , Sasmita , W. and Qaisya Huda , F. 2024. Effectiveness of Using Problem-Based Electronic Modules on Agreement Materials for Students. IJCER (International Journal of Chemistry Education Research). 8, 2 (Oct. 2024), 113–120. DOI:https://doi.org/10.20885/ijcer.vol8.iss2.art4.