Ummu Khairiyah, Nur Faizah, S. ., & Permata Dewi, L. (2022). Mastery Level of Basic Concept of Science Course Using STEM-PBL based PHET Simulation Application: Mastery of Concepts; Phet Simulation; STEM-PBL . Education and Human Development Journal, 7(03), 57–63. https://doi.org/10.33086/ehdj.v7i03.3607