diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/40.n3/20.fr/ 20.overview/cheatsheet.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/40.n3/20.fr/ 20.overview/cheatsheet.fr.md
index 3c7f2d8ca..1986efc2c 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/40.n3/20.fr/ 20.overview/cheatsheet.fr.md	
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/40.n3/20.fr/ 20.overview/cheatsheet.fr.md	
@@ -6,6 +6,8 @@ visible: false
 lessons:
     - slug: mecanique-classique-n3-linear
       order: 2
+    - slug: modern-versus-classical-physics-3
+      order: 2
 ---
 
 #### Mécanique classique, n3, synthèse