This video shows you how to use Python as a simple calculator, including editing, importing math (and complex math) functions, and defining your own variables and functions.
Watch for related videos in the New Planet School PIE (Python In Education) series. All of the Python codes used in this series are available at NPS's Google Drive:
https://drive.google.com/?usp=folder&authuser=1#folders/0B-Hob7Evc6ImdDVUcDZEU05id1k