The project to deliver One Laptop Per Child (OLPC) for educational purpose in developing countries is doing great in Paraguay. According to developer Bernie Innocenti, this success comes from a way to manage the development of the Sugar educational software that other countries (or any other similar projects, see for example the Teachermate or the italian JumpPC) could and should imitate.
Sugar is an educational graphical computer environment specifically developed for collaborative learning in primary school. Initially, Sugar was developed and only used within the famous One Laptop Per Child project (OLPC) launched by Nicholas Negroponte to make special laptop computers, called XO, available to the children of all developing countries. (follow the link to see an Example of the Sugar graphical interface.