In this chapter we present P-Dinamet, a web-based educational system that recommends to the learner certain actions within a Physics course. We review an earlier version of the system and the pedagogical model behind it, then present an extended system that adapts to both learners and teachers. The sugges tions are made according the information stored in learners models containing information about personal data, preferences and knowledge level. These models are presented to the teacher along with information about the learners performance in the course and the suggestions to be presented to the learners. The teacher can modify the learners models and provide feedback to the adaptation mechanism.