In the 17th century, the beginning of the industrial era brought new ways of working, creating more effective ways to design and build products where cooperation played a very important role. In this context, we hypothesize that in the 21st century the problem of lack of invention in the design process of digital learning objects in general and of digital school textbooks in particular stems from the way of working inherited from the industrial era, centered on the division of labor to perform repetitive tasks more quickly. Based on this hypothesis, within the REMASCO project (reinvent the school textbook), we propose a design model based on a collaborative online framework within a heterogeneous ecosystem that would foster invention in the design process of digital school textbooks.