Resumen
In this paper we present a framework (CA-Mobile Framework) for develop educational activities for collaborative learning based on mobile devices, this framework is composited by two main components: A documental reference and an API for develop mobile software, these components are described in this paper, included a process model for apply the framework as well as a evaluation of the documental reference. The results of this evaluation show that is possible replicate the procedure of describe and define activities based on mobile devices using the CA-Mobile Framework.