Abstract
Despite the existing variety of learning design tools, there is a gap in their understanding and adoption by the educators in their everyday practices. Sharing is one of the main pillars of learning design but sometimes it is not a sufficient reason to convince teachers to adopt the habit of documenting their practices so they can be shared. This study presents the design principles of edCrumble, an online learning design platform that allow teachers the creation and sharing of blended learning designs with the support of data analytics. The design principles have been learned and extracted from a participatory design process with teachers during the conceptualization and ongoing development of the tool. Several workshops including interviews were carried out as part of a design-based research iteration process. Later analysis has been done to extract and highlight those design principles aiming informing the development of learning design tools towards better learning design adoption.