On the occasion of the celebration of “Twenty Years of Didactique of Ma- ematics” in France, Jeremy Kilpatrick commented that though the works of Guy Brousseau are known through texts referring to them or mentioning their existence, the original texts are unknown, or known only with difficulty, in the non-Fren- speaking world.
Prelude to the Introduction.- Setting the Scene with an Example: the Race to 20.- Prelude.- Foundations and Methods of Didactique.- Prelude.- Epistemological Obstacles, Problems, and Didactical Engineering.- Prelude.- Problems with Teaching Decimal Numbers.- Interlude.- Didactical Problems with Decimals.- Postlude Didactique and Teaching Problems.- Prelude.- The Didactical Contract: The Teacher, the Student and the Milieu.- Prelude.- Didactique: What Use is it to a Teacher?.