Abstract
The paper presents Mobile ELDIT' (m-ELDIT), a system under development which goal is to offer access from PDAs to the learning materials of ELDIT - an adaptable language learning platform. The ELDIT system, which is developed at the European Academy of Bolzano, consists of a learner's dictionary and a text corpus. Exercises, a tandem system and a tutor module are planned. The system works online and the adaptation of the content is done dynamically according to interactions with the learner. We analyze the requirements for adaptation and transformation of the data, the user interfaces and also the architecture of the 'Mobile ELDIT'. We discuss the necessity of specific user modeling in order to provide both online and offline access to the learning materials from mobile devices.