Update cheatsheet.fr.md

5 years ago · c6c2ae1c2f
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--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/30.n3/20.overview/cheatsheet.fr.md
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@ -3,6 +3,9 @@ title: Les relativités niveau 3
 published: true
 routable: true
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+lessons:
+    - slug: modern-versus-classical-physics-3
+      order: 1
 ---

 Les relativités niveau 3, overview