Chotima, H., Riyasni, S., Asrizal, A., & Stivani Suherman, D. (2026). Need Analysis to Develop E-Student Worksheet Integrated PBL Model and Virtual Laboratory to Improve Students’ Problem-Solving Skills. Journal of Innovative Physics Teaching, 4(1), 138–150. https://doi.org/10.24036/jipt/vol4-iss1/136