diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/05.first-steps/textbook.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/05.first-steps/textbook.fr.md
index a7076300c..4bc53bad4 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/05.first-steps/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/05.first-steps/textbook.fr.md
@@ -6,6 +6,8 @@ visible: false
 lessons:
     - slug: definir-g12-outil-mathematique
       order: 1
+    - slug: define-g-mathematical-tools-polyglot
+      order: 1
 ---
 
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