diff --git a/python-for-beginners/Slides/0 - Intro.pptx b/python-for-beginners/Slides/00 - Intro.pptx
similarity index 100%
rename from python-for-beginners/Slides/0 - Intro.pptx
rename to python-for-beginners/Slides/00 - Intro.pptx
diff --git a/python-for-beginners/Slides/1 - Getting started.pptx b/python-for-beginners/Slides/01 - Getting started.pptx
similarity index 100%
rename from python-for-beginners/Slides/1 - Getting started.pptx
rename to python-for-beginners/Slides/01 - Getting started.pptx
diff --git a/python-for-beginners/Slides/2 - Print.pptx b/python-for-beginners/Slides/02 - Print.pptx
similarity index 100%
rename from python-for-beginners/Slides/2 - Print.pptx
rename to python-for-beginners/Slides/02 - Print.pptx
diff --git a/python-for-beginners/Slides/3 - Comments.pptx b/python-for-beginners/Slides/03 - Comments.pptx
similarity index 100%
rename from python-for-beginners/Slides/3 - Comments.pptx
rename to python-for-beginners/Slides/03 - Comments.pptx
diff --git a/python-for-beginners/Slides/4 - StringVariables.pptx b/python-for-beginners/Slides/04 - StringVariables.pptx
similarity index 100%
rename from python-for-beginners/Slides/4 - StringVariables.pptx
rename to python-for-beginners/Slides/04 - StringVariables.pptx
diff --git a/python-for-beginners/Slides/5 - NumericVariables.pptx b/python-for-beginners/Slides/05 - NumericVariables.pptx
similarity index 100%
rename from python-for-beginners/Slides/5 - NumericVariables.pptx
rename to python-for-beginners/Slides/05 - NumericVariables.pptx
diff --git a/python-for-beginners/Slides/6 - Dates.pptx b/python-for-beginners/Slides/06 - Dates.pptx
similarity index 100%
rename from python-for-beginners/Slides/6 - Dates.pptx
rename to python-for-beginners/Slides/06 - Dates.pptx
diff --git a/python-for-beginners/Slides/7 - ErrorHandling.pptx b/python-for-beginners/Slides/07 - ErrorHandling.pptx
similarity index 100%
rename from python-for-beginners/Slides/7 - ErrorHandling.pptx
rename to python-for-beginners/Slides/07 - ErrorHandling.pptx
diff --git a/python-for-beginners/Slides/8 - Conditions.pptx b/python-for-beginners/Slides/08 - Conditions.pptx
similarity index 100%
rename from python-for-beginners/Slides/8 - Conditions.pptx
rename to python-for-beginners/Slides/08 - Conditions.pptx
diff --git a/python-for-beginners/Slides/9 - MultipleConditions.pptx b/python-for-beginners/Slides/09 - MultipleConditions.pptx
similarity index 100%
rename from python-for-beginners/Slides/9 - MultipleConditions.pptx
rename to python-for-beginners/Slides/09 - MultipleConditions.pptx