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 32a439d15..44b2e641e 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
@@ -4,10 +4,17 @@ published: true
 routable: true
 visible: false
 lessons:
-    - slug: brainstorming-g12-mathematical-tools
+    - slug: definir-g12-outil-mathematique
       order: 1
 ---
 
+<!----------------------------------------------
+lessons:
+    - slug: brainstorming-g12-mathematical-tools
+      order: 1
+----------------------------------------------->
+
+
 ### Brainstorming sur les outils mathématiques requis à chaque niveau
 
 --------------------