Ask HN: Python teaching materials

Myself, my business partner and some other students / alumni of Bristol University have been running Python classes for year 8-9s in the UK (ages 13-14).

Can you guys give us some feedback and suggestions on our materials and our understanding of the best route to Python literacy for non-programers.

http://blog.rocketpod.co.uk/learning-python-on-the-pi-lesson-1/