Supporting Self-Reflection in Personal Learning Environments Through User Feedback Alexander Nussbaumer 1 , Milos Kravcik 2 , and Dietrich Albert 1 1 Knowledge Management Institute, Graz University of Technology, Inffeldgasse 21a, 8010 Graz, Austria {alexander.nussbaumer,dietrich.albert}@tugraz.at 2 Lehrstuhl Informatik 5, RWTH Aachen University Ahornstraße 55, 52056 Aachen, Germany kravcik@dbis.rwth-aachen.de Abstract. Self-regulated learning (SRL) is a crucial skill in the era when people need to learn during their whole lives. However, the traditional educational system, which is teacher-centered, does not cultivate this competence very well. In this paper we propose an approach to stimulate reflection of learners about their own learning processes, which is an important part of SRL. The approach is based on a mashup recommender that provides guidance in creating Personal Learning Environments and a widget supporting self-reflection of learners. They receive information on their usage of individual widgets and provide feedback assigning learning activities to these widgets. The aim is to raise awareness of the learners on their learning activities and how they cover the whole spectrum of SRL. We expect that this tool complemented by other ones, will support self-regulation of learners. Keywords: personal learning environments, recommender, widget, mashup, ontology, learning activities, self-regulated learning 1 Introduction Self-Regulated Learning (SRL) [1] means overtaking the responsibility by the learner for his or her own learning process, its self-monitoring, and control aim- ing at learning objectives. From the psychological perspective the learner must use both cognitive and meta-cognitive strategies. The cognitive ones focus on processing of learning materials, while the meta-cognitive ones deal with the ap- plication of cognitive strategies, i.e. their planning, monitoring, and regulation. Research suggests that the quality of application of the cognitive learning strate- gies is crucial for successful learning and that it can be improved by training. From the implementation point of view the concept Personal Learning Envi- ronment (PLE) is in line with the SRL requirements. PLE describes the tools, communities, and services that constitute the individual educational platforms that learners use to direct their own learning and pursue educational goals. Com- pared to course-centric solutions (like Learning Management Systems) PLE is 41