Coq, un outil pour l'enseignement

In this article, we present the use of the Coq proof assistant with DESS (Master thesis) students. First, in the framework of a course of programming language semantics, Coq greatly helps the students to understand formal and abstract notions, such as induction, by binding them to more concrete terms. Next, a computer science project shows that Coq is also appropriate when dealing with larger problems. Last, we show how proofs developed by means of the Focal toolbox made it possible to get very valuable hints on the development of that system