Our research work proposes an adaptive and embodied virtual tutor based on intelligent tutoring systems. The domain model is represented in our work by a virtual environment meta-model and the interface by an embodied conversational agent. Our main contribution concerns the tutor model, that is able to adapt the execution of a peda-gogical scenario according to the learner's level of knowledge. To achieve such a goal, we rely on the inference of the learner's memory content.