In the context of personalization of learning, we present our approach and both theoretical and practical results of our research allowing teachers to propose personalized work sequences to their students. We established a typology of pencil and paper exercises that can be given to learners. Here we propose a meta-architecture for semi-automatic generators organized in four levels, meta-architecture applied to establish the architectures of the required generators to propose the exercises of our typology. We also implemented and tested these architectures in a module allowing to generate pencil and paper exercises sheets suited to learners profile.