Dr. Osama Gebril Ahmed Abdellatief. "The Effectiveness of Electronic Lesson Study Strategy in Developing Technological Pedagogical Content Knowledge TPACK and Attitude Towards Teaching Profession among The Chemistry Student-teachers at the Faculties of Educaion.", Egyptian Journal of Science Education, 24, 4, 2021, 206-252. doi: 10.21608/mktm.2021.215539