Walid Galal Awad Rizk Zayed. "Effect of interaction between presentation methods (slide sharing & screen sharing) and feedback levels (corrective & explanatory return) with web-based training program To develop the skills of dealing with technological innovations based on cloud computing for educational technology specialists", المجلة العلمية للجمعية المصرية للکمبيوتر التعليمي, 6, 1, 2018, 61-108. doi: 10.21608/eaec.2018.52782