Over the last decade, the education sector has invested heavily in digital technology, but there is not evidence that such investment has yet resulted in radical improvements to educational attainment. International surveys describe the seriousness of a gap in the implementation of ICT-enabled innovation for learning and its negative implication on learning outcomes. Taking this into account, the European initiative on “Opening up education” shows that the development of approaches to ICT-supported learning and the access to quality OER (Open Educational Resources) is of high priority. In this context, MUST vision is that committed teachers, with convenient support, are able to build research based elearning materials for innovative practices. These materials will have the format of Open Moodle Courses developed in order to be used in mobile devices and will be translated to the partnership languages. Later, they will be used to promote teacher professional development by training teachers in their management. In order to achieve this objective a consortium composed of four secondary schools from four countries (Spain, Slovenia, Poland and Romania), one edutech company and a Regional Education Department has been set up with the following specific objectives: 1. To develop 2 blended Moodle courses (1:Maths; 1: Physics) aimed to students aged 16-17 years. These one-year courses will integrate a combination of classroom and online based activities. The didactical approach will use Problem-based techniques and will be aimed to develop 21st century skills, such as inquiry, learn to learn and collaboration. Courses will be published as OER (Open Educational Resource) under a Creative Commons licence and translated to English and to other partners' languages. 2. To organise, at least 10 teacher training activities, at national and European/International level, in order to discuss MUST materials. In addition, the project server will offer free access to the courses to facilitate networking between the MST teacher community. 3. To engage, at least, 40 teachers in experimenting the materials developed in different classroom contexts, involving more than 800 students. MUST partners will contribute to the mentoring of teachers and monitoring student progress. It is expected that this approach could contribute to support the production and adoption of OER in diverse European languages and help in reaching the EU2020 target of 40% of attainment in tertiary education.