Teaching interaction can be defined as all the actions proposed to learners during a given training course, whether it is organised at a distance or face-to-face. These famous actions can be tests, i.e. open questions, quizzes or even peer evaluation. They can also be learning simulations directly at a given workplace or immersive learning. They can also be learning activities. They can be playful (serious games, educational games) or not (work in sub-groups, case studies, exercises). Finally, the actions in question may be exchanges between learners or with the trainer.