Ema Rasti Arwana Hsb, Fauziyah Harahap and Zainuddin Muchtar 2026. The Development Of A STEM-Based Electronic Student Worksheet (E-LKPD) For Natural And Social Sciences To Enhance The Critical Thinking Skills Of Fifth-Grade Elementary School Students On The Topic Of The Human Digestive System. International Journal of Education, Vocational and Social Science . 5, 04 (Sep. 2026), 1484-1501. DOI:https://doi.org/10.63922/ijevss.v5i04.6594.