diff --git a/4_execution_model/0_def.txt b/4_execution_model/1_structure_of_a_program/0_def.txt
similarity index 100%
rename from 4_execution_model/0_def.txt
rename to 4_execution_model/1_structure_of_a_program/0_def.txt
diff --git a/4_execution_model/1_code_block.py b/4_execution_model/1_structure_of_a_program/1_code_block.py
similarity index 100%
rename from 4_execution_model/1_code_block.py
rename to 4_execution_model/1_structure_of_a_program/1_code_block.py
diff --git a/4_execution_model/1_code_block.txt b/4_execution_model/1_structure_of_a_program/1_code_block.txt
similarity index 100%
rename from 4_execution_model/1_code_block.txt
rename to 4_execution_model/1_structure_of_a_program/1_code_block.txt
diff --git a/4_execution_model/2_execution_frame.py b/4_execution_model/1_structure_of_a_program/2_execution_frame.py
similarity index 100%
rename from 4_execution_model/2_execution_frame.py
rename to 4_execution_model/1_structure_of_a_program/2_execution_frame.py
diff --git a/4_execution_model/2_execution_frame.txt b/4_execution_model/1_structure_of_a_program/2_execution_frame.txt
similarity index 100%
rename from 4_execution_model/2_execution_frame.txt
rename to 4_execution_model/1_structure_of_a_program/2_execution_frame.txt
diff --git a/4_execution_model/3_names_and_name_binding_name_locality.py b/4_execution_model/2_naming_and_binding/1_names_and_name_binding_name_locality.py
similarity index 100%
rename from 4_execution_model/3_names_and_name_binding_name_locality.py
rename to 4_execution_model/2_naming_and_binding/1_names_and_name_binding_name_locality.py
diff --git a/4_execution_model/3_names_and_name_binding_name_locality.txt b/4_execution_model/2_naming_and_binding/1_names_and_name_binding_name_locality.txt
similarity index 100%
rename from 4_execution_model/3_names_and_name_binding_name_locality.txt
rename to 4_execution_model/2_naming_and_binding/1_names_and_name_binding_name_locality.txt
diff --git a/4_execution_model/imports.py b/4_execution_model/imports.py
deleted file mode 100644
index c18da8c..0000000
--- a/4_execution_model/imports.py
+++ /dev/null
@@ -1 +0,0 @@
-from ... import *
\ No newline at end of file
diff --git a/4_execution_model/6_functions.py b/8_compound_statements/7_functions.py
similarity index 100%
rename from 4_execution_model/6_functions.py
rename to 8_compound_statements/7_functions.py