Calatrava, J.A.R. 2022. Development and Evaluation of E–Learning Materials with Kotobee Application in Physical Science for Grade 11 Students. International Journal of Multidisciplinary: Applied Business and Education Research. 3, 10 (Oct. 2022), 1913-1920. DOI:https://doi.org/10.11594/ijmaber.03.10.08.