diff --git a/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/20.n2/10.brainstorming/textbook.fr.md b/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/20.n2/10.brainstorming/textbook.fr.md
index cef9475e2..c678f2efe 100644
--- a/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/20.n2/10.brainstorming/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/99.new-propositions/20.sets-systems/20.n2/10.brainstorming/textbook.fr.md
@@ -6,6 +6,8 @@ visible: false
 lessons: 
    - slug: set-systems-g12-brainstorming-panorama
      order: 2
+   - slug: set-systems-234-brainstorming-panorama
+     order: 1
 ---
 
-### Des ensembles aux systèmes : niveau 1
\ No newline at end of file
+### Des ensembles aux systèmes : niveau 2
\ No newline at end of file