diff --git a/Activity_3_python/exercise_1/ex1_1.py b/Activity_3_python/exercise_1/exercise_1_1.py
similarity index 100%
rename from Activity_3_python/exercise_1/ex1_1.py
rename to Activity_3_python/exercise_1/exercise_1_1.py
diff --git a/Activity_3_python/exercise_1/ex1_2.py b/Activity_3_python/exercise_1/exercise_1_2.py
similarity index 100%
rename from Activity_3_python/exercise_1/ex1_2.py
rename to Activity_3_python/exercise_1/exercise_1_2.py
diff --git a/Activity_3_python/exercise_1/ex1_3.py b/Activity_3_python/exercise_1/exercise_1_3.py
similarity index 100%
rename from Activity_3_python/exercise_1/ex1_3.py
rename to Activity_3_python/exercise_1/exercise_1_3.py
diff --git a/Activity_3_python/exercise_1/ex1_4.py b/Activity_3_python/exercise_1/exercise_1_4.py
similarity index 100%
rename from Activity_3_python/exercise_1/ex1_4.py
rename to Activity_3_python/exercise_1/exercise_1_4.py
diff --git a/Activity_3_python/exercise_1/ex1_5.py b/Activity_3_python/exercise_1/exercise_1_5.py
similarity index 100%
rename from Activity_3_python/exercise_1/ex1_5.py
rename to Activity_3_python/exercise_1/exercise_1_5.py
diff --git a/Activity_3_python/exercise_1/ex1_6.py b/Activity_3_python/exercise_1/exercise_1_6.py
similarity index 100%
rename from Activity_3_python/exercise_1/ex1_6.py
rename to Activity_3_python/exercise_1/exercise_1_6.py
diff --git a/Activity_3_python/exercise_1/ex1_6_mieux.py b/Activity_3_python/exercise_1/exercise_1_6_mieux.py
similarity index 100%
rename from Activity_3_python/exercise_1/ex1_6_mieux.py
rename to Activity_3_python/exercise_1/exercise_1_6_mieux.py
diff --git a/Activity_3_python/exercise_2/ex2_1.py b/Activity_3_python/exercise_2/exercise_2_1.py
similarity index 100%
rename from Activity_3_python/exercise_2/ex2_1.py
rename to Activity_3_python/exercise_2/exercise_2_1.py
diff --git a/Activity_3_python/exercise_2/ex2_2_1.py b/Activity_3_python/exercise_2/exercise_2_2_1.py
similarity index 100%
rename from Activity_3_python/exercise_2/ex2_2_1.py
rename to Activity_3_python/exercise_2/exercise_2_2_1.py
diff --git a/Activity_3_python/exercise_2/ex2_2_2.py b/Activity_3_python/exercise_2/exercise_2_2_2.py
similarity index 100%
rename from Activity_3_python/exercise_2/ex2_2_2.py
rename to Activity_3_python/exercise_2/exercise_2_2_2.py
diff --git a/Activity_3_python/exercise_2/ex2_3.py b/Activity_3_python/exercise_2/exercise_2_3.py
similarity index 100%
rename from Activity_3_python/exercise_2/ex2_3.py
rename to Activity_3_python/exercise_2/exercise_2_3.py
diff --git a/Activity_3_python/exercise_2/ex2_4.py b/Activity_3_python/exercise_2/exercise_2_4.py
similarity index 100%
rename from Activity_3_python/exercise_2/ex2_4.py
rename to Activity_3_python/exercise_2/exercise_2_4.py
diff --git a/Activity_3_python/exercise_2/ex2_5.py b/Activity_3_python/exercise_2/exercise_2_5.py
similarity index 100%
rename from Activity_3_python/exercise_2/ex2_5.py
rename to Activity_3_python/exercise_2/exercise_2_5.py
diff --git a/Activity_3_python/exercise_3/ex3_1.py b/Activity_3_python/exercise_3/exercise_3_1.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_1.py
rename to Activity_3_python/exercise_3/exercise_3_1.py
diff --git a/Activity_3_python/exercise_3/ex3_2.py b/Activity_3_python/exercise_3/exercise_3_2.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_2.py
rename to Activity_3_python/exercise_3/exercise_3_2.py
diff --git a/Activity_3_python/exercise_3/ex3_3_1.py b/Activity_3_python/exercise_3/exercise_3_3_1.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_3_1.py
rename to Activity_3_python/exercise_3/exercise_3_3_1.py
diff --git a/Activity_3_python/exercise_3/ex3_3_2.py b/Activity_3_python/exercise_3/exercise_3_3_2.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_3_2.py
rename to Activity_3_python/exercise_3/exercise_3_3_2.py
diff --git a/Activity_3_python/exercise_3/ex3_4.py b/Activity_3_python/exercise_3/exercise_3_4.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_4.py
rename to Activity_3_python/exercise_3/exercise_3_4.py
diff --git a/Activity_3_python/exercise_3/ex3_5.py b/Activity_3_python/exercise_3/exercise_3_5.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_5.py
rename to Activity_3_python/exercise_3/exercise_3_5.py
diff --git a/Activity_3_python/exercise_3/ex3_6_1.py b/Activity_3_python/exercise_3/exercise_3_6_1.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_6_1.py
rename to Activity_3_python/exercise_3/exercise_3_6_1.py
diff --git a/Activity_3_python/exercise_3/ex3_6_2.py b/Activity_3_python/exercise_3/exercise_3_6_2.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_6_2.py
rename to Activity_3_python/exercise_3/exercise_3_6_2.py
diff --git a/Activity_3_python/exercise_3/ex3_7.py b/Activity_3_python/exercise_3/exercise_3_7.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_7.py
rename to Activity_3_python/exercise_3/exercise_3_7.py
diff --git a/Activity_3_python/exercise_3/ex3_8.py b/Activity_3_python/exercise_3/exercise_3_8.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_8.py
rename to Activity_3_python/exercise_3/exercise_3_8.py
diff --git a/Activity_3_python/exercise_3/ex3_9_1.py b/Activity_3_python/exercise_3/exercise_3_9_1.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_9_1.py
rename to Activity_3_python/exercise_3/exercise_3_9_1.py
diff --git a/Activity_3_python/exercise_3/ex3_9_2.py b/Activity_3_python/exercise_3/exercise_3_9_2.py
similarity index 100%
rename from Activity_3_python/exercise_3/ex3_9_2.py
rename to Activity_3_python/exercise_3/exercise_3_9_2.py