Kachi, H., Yasunaga, T., Sakai, K., Hyuga, R., & Shiota, S. (2022). DEVELOPMENT AND EVALUATION OF MATERIALS FOR CHILDREN TO REDUCE THE TABLET DEVICE OPERATIONAL PROBLEMS: Received: 10th January 2022; Revised: 14th February 2022, 3rd March 2022, 5th March 2022; Accepted: 7th March 2022. PUPIL: International Journal of Teaching, Education and Learning, 6(1), 271–284. https://doi.org/10.20319/pijtel.2022.61.271284