diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/10.n1/12.en/textbook.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/10.n1/12.en/textbook.fr.md
index 61432002d..409bc2f28 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/10.n1/12.en/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/10.math-tools/10.n1/12.en/textbook.fr.md
@@ -6,6 +6,8 @@ visible: false
 lessons:
     - slug: define-g12-mathematical-tools
       order: 2
+    - slug: define-1-mathematical-tools-polyglot
+      order: 3
 ---
 
 #### Define the mathematical tools required at level 1