Sumari, Sumari, and Aisyah Permatasari. “Development of Website Based Learning Media With Problem Based Learning Model to Improve Student Learning Outcomes on Chemical Equilibrium Material at High School Level”. Orbital: The Electronic Journal of Chemistry 18, no. 1 (July 1, 2026): 64–73. Accessed July 26, 2026. https://periodicos.ufms.br/index.php/orbital/article/view/23994.