diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/10.n1/textbook.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/10.n1/textbook.fr.md
index e84e4b679..6edc8c3f8 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/10.n1/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/10.n1/textbook.fr.md
@@ -6,6 +6,8 @@ visible: false
 lessons:
     - slug: brainstorming-123-mathematical-tools
       order: 1
+    - slug: brainstorming-g12-mathematical-tools
+      order: 2
 ---
 
 ### Brainstorming sur les outils mathématiques requis à chaque niveau