The research we have carried out relates to the personalization of learning thanks to the exploitation of learners profiles through the PERLEA project. We are aiming at designing a module managing the generation of personalized activities. For this purpose, we suggested a typology of pencil and paper exercises that can be given to a learner, as well as the architecture of generators allowing the creation of all of these exercises. We also implemented and tested our proposition in a module helping the teacher to propose exercises suited to his students' knowledge.