"The School education in the most vital educational period for students. Many reports in EU level point out the importance of school education and its impact on students knowledge and skills and the improvement of the efficiency of school education is a top priority of the European Commission. A main course in all levels of school education are the mathematics. Mathematics occupies a crucial and unique role in all science disciplines and represents a strategic key in the development of the whole society. However, students find mathematics courses to be the most difficult and challenging and face particular difficulties in understanding and comprehending the various topics math courses.Good understanding of mathematics, science and technology is an essential component for a successful professional and social life. However, the current situation in EU level where more than 20% of young Europeans not reaching a minimum level of basic skills in mathematics and science is alarming. According to PISA surveys conducted in European level, the students achievements in mathematics comparing the OECD average is alarmingly low in many EU countries and special actions are needed to address and assists mathematics education. So, specific actions and initiations should be designed towards this direction as highlighted by EU commission.In this context, MATHESIS project aims to define a coherent framework for school mathematics education with the utilization of game-based learning and advance ICT technologies like virtual reality. The project aims to assist students at ISCED level 1 & 2 in studying mathematics with the utilization of innovative technologies like virtual reality. Specifically, a game based 3D virtual reality educational environment will be developed possessing innovative educational infrastructure and offering immersive and efficient learning opportunities. It will engage students in various learning activities and offer students an attractive, entertaining and efficient way to learn various mathematics courses. The students will have the ability to virtually explore procedures and examine the ways that math works. The virtual educational environment and the game-based activities will be designed in a way that supports students to form appropriate mental models of involved concepts, by visualizing them and allowing interactions with the virtual phenomena and mathematics processes. This will contribute in more effective ICT-based teaching and training and will also offer new, more attractive ways of teaching, through the 3D World and the gamesThe main outputs of the project concern a series of reports and roadmaps on school math education, Innovative Learning Material for Mathematics education, a game based virtual reality educational environment and games to assist students in learning mathematics topics and a open content repository to organize and share all the results are OERs. All the project's outputs will be freely available to public.The partnership consists of 6 partners from 5 EU countries with complementary experience and skills that secure the high quality of the results of the project. Project coordinator is the Universitatea Politehnica in Bucharest which is the largest technical university in Romania and has great experience in the modernization of education, by developing, testing and implementing new technologies and methodologies in education. Computer Technology Institute is the main operator and coordinator of Greek School Network which provides various learning services to schools, students and teachers. University of Turku has great reputation in innovative research and possesses great skills and expertise in Virtual Reality and intelligent educational systems and will be leading the development of the 3D virtual reality environment. The CCOV has experiences from the education and training processes and act or acted as a teachers at schools and/or universities and provides a range of complementary skills and experiences, that are necessary in order to conduct the project successfully. Also it have valuable expertise in the formulation of innovative methods and creating learning processes and will be participate in providing content and describing learning scenarios for mathematics education in virtual world environment. ""Elena Cuza"" National College in Bucurest will provide valuable expertise and test-bed during the project. Finally, CNR in Italy is one of the most notable and specialized institutes in European level on educational technologies and will participate in the specification of the courses on mathematics and their multimedia.The project will modernize and improve the effectiveness of school mathematics education and reinforce the efficiency and the attractiveness of mathematics education in European Level. Finally, a strategic aim is the integration of the MATHESIS into national educational systems and partners have the influence to achieve this important aim."