They can be used as a supporting materials to enhance students’ understanding about a topic. However, it is not recommended to be used separately from face to face teaching.
Thanks Ameera for you reply. I totally agree with you, nothing can substitute real teachers. Face to face learning and interaction is crucial for unlimited reasons.
Indubitably, the dramatic advances in virtual world have introduced invaluable innovations into educational settings. As a case in point, I use Edmodo in my language classes and the interactive feedback it provides has pedagogically been rewarding.
Thank Professor @Reda Biria for your comment. Edmodo is really a helpful tool for engaging students. I believe teachers should choose what suit their teaching goals.