The whole development was twofold - firstly, the prototype that let us evaluate the design, functionality and user interface; then, the second version that empowered the app with new features (a core milestone was enabling remote online lessons) and introduced improvements.

The overall development brought a powerful HTML5/NW.js desktop app that redefined a way of conducting lessons. This provides teachers and students with the possibility to draw, sketch, import media files (like images and videos), and have interaction via multi-touch gestures. Example: after selecting the lesson by the teacher, it is automatically loaded on all connected tablets. Moving to the next slide of a presentation with the help of Web Sockets is synchronized with all devices. This means that students with connected mobile devices can see the same slide as the teacher has chosen on all other tablets in the class.

The app contains four core functional elements such as:

• the U brain - the system logic stored in cloud environments that includes digital content, users profiles data and the template repository. The U brain defines and manages how content fills the templates and how these are presented on the frontends,
• the Android App - a tablet application that can be downloaded for free from the Google Play Store,
• the rich frontends - the interactive software-hardware tools created to improve the experience in the classroom by interactive multi-touch whiteboard and table,
• the U transport layer which includes: Satellite connectivity dedicated to the interconnection of enhanced classrooms and remote users living in digital divide areas, 3G/4G, ADSL and Satellite connectivity for personal use, WiFi connectivity dedicated to the local interconnection into the enhanced classroom between tablets and the rich front ends.

Throughout the over 5-month ongoing app development, we relied on Agile methodology staying in close cooperation and maintaining transparent communication with all the stakeholders.