diff --git a/Shapes.h b/src/Shapes.h
similarity index 100%
rename from Shapes.h
rename to src/Shapes.h
diff --git a/SimpleExpressions.cpp b/src/SimpleExpressions.cpp
similarity index 100%
rename from SimpleExpressions.cpp
rename to src/SimpleExpressions.cpp
diff --git a/SimpleExpressions.h b/src/SimpleExpressions.h
similarity index 100%
rename from SimpleExpressions.h
rename to src/SimpleExpressions.h
diff --git a/Sounds.h b/src/Sounds.h
similarity index 100%
rename from Sounds.h
rename to src/Sounds.h