Communication- Skype
https://www.skype.com/en/ We can easily do video chats with classes in other centers nationwide, and stay in touch and do projects together.
Collaboration- poppet
http://popplet.com/ We can use this to work together as a class on different projects and activities and also easily share them.
Creativity- Book Creator for iPad
https://bookcreator.com/ipad/ I can see many class projects and theme activities happening with this app. They can make their iBooks and share them.
Critical thinking- Lino
http://en.linoit.com/ When I saw this the first thing that popped in my head was to make boards for our letter of the week. Every week a new letter, list of things that start with that letters, photo collages and so on.
Organization- TeacherTube
http://www.teachertube.com/mobile/ I had no idea this existed and it's amazing. You can find videos on so many topics and they are safe and kid friendly.