ires mairesma, Ratnawulan. Development and Validity of Electronic Worksheet Based on POE (Predict-Observe-Explain) to Enhance Students Conceptual Understanding on Measurement Materials. Department of Physics Universitas Negeri Padang [Internet]. 2026 Jun. 25 [cited 2026 Jul. 4];4(2). Available from: https://ple.ppj.unp.ac.id/index.php/ple/article/view/346