World Wide Web 2.0 is a set of information-communication technologies that create cooperative space in which multimedia can be shared and virtual social contacts can be created without sophisticated digital programming. This technology is suitable for the modernization of traditional forms of teaching in the primary education system, as well as for improvement concerning communication with pupils and development of new communication culture. For example, by using World Wide Web 2.0 communication with pupils is also possible in extracurricular time. Also, application of this technology eases preparations for classin a classroom and allows easier cooperation on projects not only to teachers but to pupils as well. In general, introducing Web 2.0 into educational system, besides educating pupils, it is necessary to educate teachers as well. Approach to the Web 2.0. is possible, both in elemental and systematic way, ie as model. Negative side of elemental approach is that it can lead to the unbalanced development of elementary education systems and potentially lead to less success. That is the reason why this problem should be resolved as a model, in order to explore most optimal forms of implementation of Web 2.0. into educational systems. As well, it is necessary to provide optimal ways to educate teaching staff.