Update textbook.en.md

5 years ago · 7c0848d6bf
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--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n2/10.brainstorming/textbook.en.md
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 lessons:
    - slug: brainstorming-123-classical-mechanics
      order: 2
+    - slug: brainstorming-234-classical-mechanics
+      order: 1
 ---

 #### Brainstorming to structure a theme "Classical mechanics" : level 2