Hello Professor, 

I am deeply sorry for not having presentation slides. We
became aware of their need after the presentations were recorded and submitted.
I apologize for not understadnign the scope of the assignment in that sense. 
Rather than create powerpoints last minute, I figured an explanation would be more
helpful and sincere than a rushed powerpoint.

I apologize for any inconvenience this may have caused 
Sincerely,
Anthony Ordaz