Aminati, S. and Purwiandono, G. 2024. Enhancing Learning Interest in the Collaborative Learning Practitioner Lecture: Training on Determining the Viscosity of Palm Kernel Oil (PKO). IJCER (International Journal of Chemistry Education Research). 8, 2 (Oct. 2024), 166–171. DOI:https://doi.org/10.20885/ijcer.vol8.iss2.art10.