diff --git a/module1/exo2/Logbook_markdown.md b/module1/exo2/Logbook_markdown.md
index 1e1d6defbc63bc2a47f5091c90be016f64dcc841..fb20d2ef3f93a431e974cfeb0f8bd7b549034657 100644
--- a/module1/exo2/Logbook_markdown.md
+++ b/module1/exo2/Logbook_markdown.md
@@ -1,3 +1,4 @@
 # My Log book
 
 ## Module 1.
+- markdown demostration in section 3 of module 1