diff --git a/source/Data_Types.rst b/source/Data_Types.rst
index aa4364e5c4885cd100299c213a26933c64d045d3..0ac0e094fd9b2a5c3d1163574210d20fb2df2a7d 100644
--- a/source/Data_Types.rst
+++ b/source/Data_Types.rst
@@ -1,5 +1,8 @@
-.. _Variables:
+.. sectnum:: 
+   :start: 3
 
-************************************
-Variables, Expression and statements
-************************************
+.. _Data_Types:
+
+**********
+Data Types
+**********
diff --git a/source/Variables.rst b/source/Variables.rst
index aa4364e5c4885cd100299c213a26933c64d045d3..7c7ab3eff342e962d0de68a103193592ad0f191a 100644
--- a/source/Variables.rst
+++ b/source/Variables.rst
@@ -1,5 +1,16 @@
+.. sectnum:: 
+   :start: 2
+
 .. _Variables:
 
 ************************************
 Variables, Expression and statements
 ************************************
+
+
+Exercices
+=========
+
+exercice
+--------
+blabla
\ No newline at end of file